diff --git a/cocos/physics/bullet/bullet-bvh-triangle-mesh-shape.ts b/cocos/physics/bullet/bullet-bvh-triangle-mesh-shape.ts
index ba86fc26902..03a7981b020 100644
--- a/cocos/physics/bullet/bullet-bvh-triangle-mesh-shape.ts
+++ b/cocos/physics/bullet/bullet-bvh-triangle-mesh-shape.ts
@@ -26,6 +26,7 @@ import { bt, EBulletType } from './instantiated';
 import { Mesh } from '../../3d/assets';
 import { cocos2BulletTriMesh } from './bullet-utils';
 
+/** @mangle */
 export class BulletBvhTriangleMeshShape {
     private static readonly BulletBvhTriangleMeshShapeMap = new Map<number, BulletBvhTriangleMeshShape>();
 
diff --git a/cocos/physics/bullet/bullet-cache.ts b/cocos/physics/bullet/bullet-cache.ts
index 4d43528ebb7..93fd0960532 100644
--- a/cocos/physics/bullet/bullet-cache.ts
+++ b/cocos/physics/bullet/bullet-cache.ts
@@ -26,6 +26,7 @@ import { Collider, TriggerEventType, CollisionEventType, IContactEquation, Chara
 import { Vec3, Quat, Mat4, Color } from '../../core';
 import { CharacterTriggerEventType } from '../framework';
 import { bt, btCache } from './instantiated';
+import type { BulletWorld } from './bullet-world';
 
 export const TriggerEventObject = {
     type: 'onTriggerEnter' as unknown as TriggerEventType,
@@ -73,6 +74,8 @@ export class BulletCache {
 
     static isNotEmptyShape (ptr: Bullet.ptr): boolean { return ptr !== bt.EmptyShape_static(); }
 
+    static world: BulletWorld | null = null;
+
     readonly BT_TRANSFORM_0 = bt.Transform_new();
     readonly BT_TRANSFORM_1 = bt.Transform_new();
     readonly BT_V3_0 = bt.Vec3_new(0, 0, 0);
diff --git a/cocos/physics/bullet/bullet-contact-data.ts b/cocos/physics/bullet/bullet-contact-data.ts
index 8023e26431c..a8ed8db8c5a 100644
--- a/cocos/physics/bullet/bullet-contact-data.ts
+++ b/cocos/physics/bullet/bullet-contact-data.ts
@@ -32,7 +32,7 @@ import { bullet2CocosQuat, bullet2CocosVec3 } from './bullet-utils';
 export class BulletContactData implements IContactEquation {
     get isBodyA (): boolean {
         const sb = (this.event.selfCollider.shape as BulletShape).sharedBody.body;
-        return sb === bt.PersistentManifold_getBody0(this.event.impl);
+        return sb === bt.PersistentManifold_getBody0(this.event.impl as number);
     }
 
     impl: Bullet.ptr = 0;  //btManifoldPoint
@@ -61,7 +61,7 @@ export class BulletContactData implements IContactEquation {
     getLocalNormalOnA (out: IVec3Like): void {
         if (this.impl) {
             const bt_rot = BulletCache.instance.BT_QUAT_0;
-            const body = bt.PersistentManifold_getBody0(this.event.impl);
+            const body = bt.PersistentManifold_getBody0(this.event.impl as number);
             const trans = bt.CollisionObject_getWorldTransform(body);
             bt.Transform_getRotation(trans, bt_rot);
             const inv_rot = CC_QUAT_0;
@@ -76,7 +76,7 @@ export class BulletContactData implements IContactEquation {
     getLocalNormalOnB (out: IVec3Like): void {
         if (this.impl) {
             const bt_rot = BulletCache.instance.BT_QUAT_0;
-            const body = bt.PersistentManifold_getBody1(this.event.impl);
+            const body = bt.PersistentManifold_getBody1(this.event.impl as number);
             const trans = bt.CollisionObject_getWorldTransform(body);
             bt.Transform_getRotation(trans, bt_rot);
             const inv_rot = CC_QUAT_0;
diff --git a/cocos/physics/bullet/bullet-enum.ts b/cocos/physics/bullet/bullet-enum.ts
index 935a943cbab..f1adf96dfb9 100644
--- a/cocos/physics/bullet/bullet-enum.ts
+++ b/cocos/physics/bullet/bullet-enum.ts
@@ -23,6 +23,7 @@
 */
 
 export enum EBtSharedBodyDirty {
+    NONE = 0,
     BODY_RE_ADD = 1,
     GHOST_RE_ADD = 2,
 }
diff --git a/cocos/physics/bullet/bullet-env.ts b/cocos/physics/bullet/bullet-env.ts
index 4a0f892466f..c2d09783826 100644
--- a/cocos/physics/bullet/bullet-env.ts
+++ b/cocos/physics/bullet/bullet-env.ts
@@ -23,15 +23,17 @@
 */
 
 import { btCache } from './instantiated';
+import type { BulletSharedBody } from './bullet-shared-body';
+import type { BulletCharacterController } from './character-controllers/bullet-character-controller';
 
 // The import function used in c++ code, same as DLL Import
 export const importFunc = {
     syncPhysicsToGraphics (id: number): void {
-        const body = btCache.CACHE.getWrapper(id, btCache.BODY_CACHE_NAME);
+        const body = btCache.CACHE.getWrapper<BulletSharedBody>(id, btCache.BODY_CACHE_NAME);
         body.syncPhysicsToGraphics();
     },
     onShapeHitExt (hit: number, controller: number): void {
-        const cct = btCache.CACHE.getWrapper(controller, btCache.CCT_CACHE_NAME);
+        const cct = btCache.CACHE.getWrapper<BulletCharacterController>(controller, btCache.CCT_CACHE_NAME);
         cct.onShapeHitExt(hit);
     },
     onDebugDrawLine (from: number, to: number, color: number): void {
diff --git a/cocos/physics/bullet/bullet-interface.ts b/cocos/physics/bullet/bullet-interface.ts
index 85097118cc4..72b762204c4 100644
--- a/cocos/physics/bullet/bullet-interface.ts
+++ b/cocos/physics/bullet/bullet-interface.ts
@@ -24,6 +24,7 @@
 
 import { BulletShape } from './shapes/bullet-shape';
 
+/** @mangle */
 export interface IBulletBodyStruct {
     readonly id: number;
     readonly body: Bullet.ptr;
@@ -33,6 +34,7 @@ export interface IBulletBodyStruct {
     useCompound: boolean;
 }
 
+/** @mangle */
 export interface IBulletGhostStruct {
     readonly id: number;
     readonly ghost: Bullet.ptr;
diff --git a/cocos/physics/bullet/bullet-rigid-body.ts b/cocos/physics/bullet/bullet-rigid-body.ts
index 5b5c84bed64..ca51752d935 100644
--- a/cocos/physics/bullet/bullet-rigid-body.ts
+++ b/cocos/physics/bullet/bullet-rigid-body.ts
@@ -36,6 +36,7 @@ import { bt } from './instantiated';
 const v3_0 = CC_V3_0;
 const v3_1 = CC_V3_1;
 
+/** @mangle */
 export class BulletRigidBody implements IRigidBody {
     get isAwake (): boolean {
         const state = bt.CollisionObject_getActivationState(this.impl);
diff --git a/cocos/physics/bullet/bullet-shared-body.ts b/cocos/physics/bullet/bullet-shared-body.ts
index 7039b651e98..27a7c469e38 100644
--- a/cocos/physics/bullet/bullet-shared-body.ts
+++ b/cocos/physics/bullet/bullet-shared-body.ts
@@ -46,6 +46,7 @@ let IDCounter = 0;
  * shared object, node : shared = 1 : 1
  * body for static \ dynamic \ kinematic (collider)
  * ghost for trigger
+ * @mangle
  */
 export class BulletSharedBody {
     private static idCounter = 0;
@@ -425,7 +426,7 @@ export class BulletSharedBody {
         const bt_quat = BulletCache.instance.BT_QUAT_0;
         const bt_transform = BulletCache.instance.BT_TRANSFORM_0;
         bt.RigidBody_getWorldTransform(this.body, bt_transform);
-        const originPosPtr = bt.Transform_getRotationAndOrigin(bt_transform, bt_quat) as number;
+        const originPosPtr = bt.Transform_getRotationAndOrigin(bt_transform, bt_quat);
         this.node.worldRotation = bullet2CocosQuat(quat_0, bt_quat);
         this.node.worldPosition = bullet2CocosVec3(v3_0, originPosPtr);
 
diff --git a/cocos/physics/bullet/bullet-world.ts b/cocos/physics/bullet/bullet-world.ts
index c18f9e1d2de..7683c55ebad 100644
--- a/cocos/physics/bullet/bullet-world.ts
+++ b/cocos/physics/bullet/bullet-world.ts
@@ -48,6 +48,8 @@ const v3_1 = CC_V3_1;
 const v3_2 = CC_V3_2;
 const c_0 = CC_COLOR_0;
 const emitHit = new CharacterControllerContact();
+
+/** @mangle */
 export class BulletWorld implements IPhysicsWorld {
     setDefaultMaterial (v: PhysicsMaterial): void {
         //empty
diff --git a/cocos/physics/bullet/character-controllers/bullet-box-character-controller.ts b/cocos/physics/bullet/character-controllers/bullet-box-character-controller.ts
index a2f640d3074..a476fc8e32c 100644
--- a/cocos/physics/bullet/character-controllers/bullet-box-character-controller.ts
+++ b/cocos/physics/bullet/character-controllers/bullet-box-character-controller.ts
@@ -35,6 +35,7 @@ import { importFunc } from '../bullet-env';
 
 const v3_0 = new Vec3(0, 0, 0);
 
+/** @mangle */
 export class BulletBoxCharacterController extends BulletCharacterController implements IBoxCharacterController {
     get component (): BoxCharacterController {
         return this._comp as BoxCharacterController;
diff --git a/cocos/physics/bullet/character-controllers/bullet-capsule-character-controller.ts b/cocos/physics/bullet/character-controllers/bullet-capsule-character-controller.ts
index 700e9724072..a63567e8513 100644
--- a/cocos/physics/bullet/character-controllers/bullet-capsule-character-controller.ts
+++ b/cocos/physics/bullet/character-controllers/bullet-capsule-character-controller.ts
@@ -35,6 +35,7 @@ import { importFunc } from '../bullet-env';
 
 const v3_0 = new Vec3(0, 0, 0);
 
+/** @mangle */
 export class BulletCapsuleCharacterController extends BulletCharacterController implements ICapsuleCharacterController {
     get component (): CapsuleCharacterController {
         return this._comp as CapsuleCharacterController;
diff --git a/cocos/physics/bullet/character-controllers/bullet-character-controller.ts b/cocos/physics/bullet/character-controllers/bullet-character-controller.ts
index b29b029ea46..1620e01e7ed 100644
--- a/cocos/physics/bullet/character-controllers/bullet-character-controller.ts
+++ b/cocos/physics/bullet/character-controllers/bullet-character-controller.ts
@@ -38,6 +38,8 @@ import { TransformBit } from '../../../scene-graph';
 const v3_0 = new Vec3(0, 0, 0);
 const v3_1 = new Vec3(0, 0, 0);
 const v3_2 = new Vec3(0, 0, 0);
+
+/** @mangle */
 export abstract class BulletCharacterController implements IBaseCharacterController {
     readonly wrappedWorld: BulletWorld;
     private _isEnabled = false;
diff --git a/cocos/physics/bullet/constraints/bullet-configurable-constraint.ts b/cocos/physics/bullet/constraints/bullet-configurable-constraint.ts
index b11466a25b4..5ac96c4f7f9 100644
--- a/cocos/physics/bullet/constraints/bullet-configurable-constraint.ts
+++ b/cocos/physics/bullet/constraints/bullet-configurable-constraint.ts
@@ -50,6 +50,7 @@ enum BulletDofAxis {
     SWING2 = 5,
 }
 
+/** @mangle */
 export class BulletConfigurableConstraint extends BulletConstraint implements IConfigurableConstraint {
     private _setLimit (v: EConstraintMode, axis: number, lower: number, upper: number): void  {
         switch (v) {
diff --git a/cocos/physics/bullet/constraints/bullet-constraint.ts b/cocos/physics/bullet/constraints/bullet-constraint.ts
index 21f7f32b83f..218a584ac6c 100644
--- a/cocos/physics/bullet/constraints/bullet-constraint.ts
+++ b/cocos/physics/bullet/constraints/bullet-constraint.ts
@@ -29,6 +29,7 @@ import { BulletRigidBody } from '../bullet-rigid-body';
 import { bt, EBulletType } from '../instantiated';
 import { BulletWorld } from '../bullet-world';
 
+/** @mangle */
 export abstract class BulletConstraint implements IBaseConstraint {
     setConnectedBody (v: RigidBody | null): void {
         if (this._connectedBody === v) return;
diff --git a/cocos/physics/bullet/constraints/bullet-fixed-constraint.ts b/cocos/physics/bullet/constraints/bullet-fixed-constraint.ts
index b1fa7e8789a..1bc5a4c74b7 100644
--- a/cocos/physics/bullet/constraints/bullet-fixed-constraint.ts
+++ b/cocos/physics/bullet/constraints/bullet-fixed-constraint.ts
@@ -32,6 +32,7 @@ import { BulletCache, CC_MAT4_0, CC_QUAT_0, CC_V3_0 } from '../bullet-cache';
 import { bt } from '../instantiated';
 import { cocos2BulletQuat, cocos2BulletVec3 } from '../bullet-utils';
 
+/** @mangle */
 export class BulletFixedConstraint extends BulletConstraint implements IFixedConstraint {
     setBreakForce (v: number): void {
         bt.TypedConstraint_setMaxImpulseThreshold(this._impl, v);
diff --git a/cocos/physics/bullet/constraints/bullet-hinge-constraint.ts b/cocos/physics/bullet/constraints/bullet-hinge-constraint.ts
index d736cb5e3c3..57c5762598e 100644
--- a/cocos/physics/bullet/constraints/bullet-hinge-constraint.ts
+++ b/cocos/physics/bullet/constraints/bullet-hinge-constraint.ts
@@ -33,6 +33,7 @@ import { bt } from '../instantiated';
 import { cocos2BulletQuat, cocos2BulletVec3, force2Impulse } from '../bullet-utils';
 import { toRadian } from '../../../core/math';
 
+/** @mangle */
 export class BulletHingeConstraint extends BulletConstraint implements IHingeConstraint {
     setPivotA (v: IVec3Like): void {
         this.updateFrames();
diff --git a/cocos/physics/bullet/constraints/bullet-p2p-constraint.ts b/cocos/physics/bullet/constraints/bullet-p2p-constraint.ts
index 2b402adc136..2f72c959cc5 100644
--- a/cocos/physics/bullet/constraints/bullet-p2p-constraint.ts
+++ b/cocos/physics/bullet/constraints/bullet-p2p-constraint.ts
@@ -32,6 +32,7 @@ import { BulletCache, CC_V3_0 } from '../bullet-cache';
 import { bt } from '../instantiated';
 import { cocos2BulletVec3 } from '../bullet-utils';
 
+/** @mangle */
 export class BulletP2PConstraint extends BulletConstraint implements IPointToPointConstraint {
     setPivotA (v: IVec3Like): void {
         const cs = this.constraint;
diff --git a/cocos/physics/bullet/instantiated.ts b/cocos/physics/bullet/instantiated.ts
index 9138e178361..62a1d737571 100644
--- a/cocos/physics/bullet/instantiated.ts
+++ b/cocos/physics/bullet/instantiated.ts
@@ -27,6 +27,7 @@ import { BUILD, LOAD_BULLET_MANUALLY, NATIVE_CODE_BUNDLE_MODE } from 'internal:c
 import { game } from '../../game';
 import { error, log, sys } from '../../core';
 import { NativeCodeBundleMode } from '../../misc/webassembly-support';
+import type { BulletCache } from './bullet-cache';
 
 //corresponds to bulletType in bullet-compile
 export enum EBulletType{
@@ -80,7 +81,7 @@ export enum EBulletDebugDrawModes
 }
 
 interface BtCache {
-    CACHE: any,
+    CACHE: typeof BulletCache,
     BODY_CACHE_NAME: string,
     CCT_CACHE_NAME: string,
 }
diff --git a/cocos/physics/bullet/shapes/bullet-box-shape.ts b/cocos/physics/bullet/shapes/bullet-box-shape.ts
index f6dca66e9b3..49ec8008e6b 100644
--- a/cocos/physics/bullet/shapes/bullet-box-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-box-shape.ts
@@ -32,6 +32,7 @@ import { cocos2BulletVec3 } from '../bullet-utils';
 import { BulletCache } from '../bullet-cache';
 import { bt } from '../instantiated';
 
+/** @mangle */
 export class BulletBoxShape extends BulletShape implements IBoxShape {
     updateSize (): void {
         const hf = BulletCache.instance.BT_V3_0;
diff --git a/cocos/physics/bullet/shapes/bullet-capsule-shape.ts b/cocos/physics/bullet/shapes/bullet-capsule-shape.ts
index 8635b83618e..60f988b3998 100644
--- a/cocos/physics/bullet/shapes/bullet-capsule-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-capsule-shape.ts
@@ -28,6 +28,7 @@ import { CapsuleCollider } from '../../../../exports/physics-framework';
 import { ICapsuleShape } from '../../spec/i-physics-shape';
 import { bt } from '../instantiated';
 
+/** @mangle */
 export class BulletCapsuleShape extends BulletShape implements ICapsuleShape {
     setCylinderHeight (v: number): void {
         this.updateProperties(
diff --git a/cocos/physics/bullet/shapes/bullet-cone-shape.ts b/cocos/physics/bullet/shapes/bullet-cone-shape.ts
index ab7ce0a0e57..14737dfb5dc 100644
--- a/cocos/physics/bullet/shapes/bullet-cone-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-cone-shape.ts
@@ -29,6 +29,7 @@ import { IVec3Like, absMax } from '../../../core';
 import { bt } from '../instantiated';
 import { BulletCache } from '../bullet-cache';
 
+/** @mangle */
 export class BulletConeShape extends BulletShape implements ICylinderShape {
     setHeight (v: number): void {
         this.updateProperties(
diff --git a/cocos/physics/bullet/shapes/bullet-cylinder-shape.ts b/cocos/physics/bullet/shapes/bullet-cylinder-shape.ts
index 1aa8913b270..324c0ab06ef 100644
--- a/cocos/physics/bullet/shapes/bullet-cylinder-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-cylinder-shape.ts
@@ -29,6 +29,7 @@ import { IVec3Like, absMax } from '../../../core';
 import { BulletCache } from '../bullet-cache';
 import { bt } from '../instantiated';
 
+/** @mangle */
 export class BulletCylinderShape extends BulletShape implements ICylinderShape {
     setHeight (v: number): void {
         this.updateProperties(
diff --git a/cocos/physics/bullet/shapes/bullet-plane-shape.ts b/cocos/physics/bullet/shapes/bullet-plane-shape.ts
index 8c1bf9a8534..5c4cf3502fe 100644
--- a/cocos/physics/bullet/shapes/bullet-plane-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-plane-shape.ts
@@ -30,6 +30,7 @@ import { IVec3Like } from '../../../core';
 import { BulletCache } from '../bullet-cache';
 import { bt } from '../instantiated';
 
+/** @mangle */
 export class BulletPlaneShape extends BulletShape implements IPlaneShape {
     setNormal (v: IVec3Like): void {
         cocos2BulletVec3(bt.StaticPlaneShape_getPlaneNormal(this.impl), v);
diff --git a/cocos/physics/bullet/shapes/bullet-shape.ts b/cocos/physics/bullet/shapes/bullet-shape.ts
index 0989df94de7..ac583b38b7c 100644
--- a/cocos/physics/bullet/shapes/bullet-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-shape.ts
@@ -35,6 +35,8 @@ import { EColliderType } from '../../framework';
 
 const v3_0 = CC_V3_0;
 const ccMaterialBooks = {};
+
+/** @mangle */
 export abstract class BulletShape implements IBaseShape {
     updateEventListener (): void {
         this._sharedBody.wrappedWorld.updateNeedEmitEvents(this.collider.needCollisionEvent || this.collider.needTriggerEvent);
@@ -46,8 +48,8 @@ export abstract class BulletShape implements IBaseShape {
             if (this._compound) {
                 if (!ccMaterialBooks[v1._uuid]) ccMaterialBooks[v1._uuid] = bt.ccMaterial_new();
                 const mat = ccMaterialBooks[v1._uuid];
-                bt.ccMaterial_set(mat, v1.restitution, v1.friction, v1.rollingFriction, v1.spinningFriction);
-                bt.CollisionShape_setMaterial(this._impl, mat);
+                bt.ccMaterial_set(mat as number, v1.restitution, v1.friction, v1.rollingFriction, v1.spinningFriction);
+                bt.CollisionShape_setMaterial(this._impl, mat as number);
             } else {
                 bt.CollisionObject_setMaterial(this._sharedBody.body, v1.restitution, v1.friction, v1.rollingFriction, v1.spinningFriction);
             }
diff --git a/cocos/physics/bullet/shapes/bullet-simplex-shape.ts b/cocos/physics/bullet/shapes/bullet-simplex-shape.ts
index 12e212910d3..8c09834f0ca 100644
--- a/cocos/physics/bullet/shapes/bullet-simplex-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-simplex-shape.ts
@@ -30,6 +30,7 @@ import { IVec3Like } from '../../../core';
 import { bt } from '../instantiated';
 import { BulletCache } from '../bullet-cache';
 
+/** @mangle */
 export class BulletSimplexShape extends BulletShape implements ISimplexShape {
     setShapeType (v: SimplexCollider.ESimplexType): void {
         // TODO:
diff --git a/cocos/physics/bullet/shapes/bullet-sphere-shape.ts b/cocos/physics/bullet/shapes/bullet-sphere-shape.ts
index bf075dccca7..2a9b82664ce 100644
--- a/cocos/physics/bullet/shapes/bullet-sphere-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-sphere-shape.ts
@@ -30,6 +30,7 @@ import { BulletCache, CC_V3_0 } from '../bullet-cache';
 import { bt } from '../instantiated';
 import { absMaxComponent } from '../../../core';
 
+/** @mangle */
 export class BulletSphereShape extends BulletShape implements ISphereShape {
     updateRadius (): void {
         bt.SphereShape_setUnscaledRadius(this.impl, this.getMinUnscaledRadius());
diff --git a/cocos/physics/bullet/shapes/bullet-terrain-shape.ts b/cocos/physics/bullet/shapes/bullet-terrain-shape.ts
index 71b9674073c..e3d1f3e57a9 100644
--- a/cocos/physics/bullet/shapes/bullet-terrain-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-terrain-shape.ts
@@ -31,6 +31,7 @@ import { ITerrainAsset } from '../../spec/i-external';
 import { CC_V3_0, BulletCache } from '../bullet-cache';
 import { bt } from '../instantiated';
 
+/** @mangle */
 export class BulletTerrainShape extends BulletShape implements ITerrainShape {
     public get collider (): TerrainCollider {
         return this._collider as TerrainCollider;
diff --git a/cocos/physics/bullet/shapes/bullet-trimesh-shape.ts b/cocos/physics/bullet/shapes/bullet-trimesh-shape.ts
index b73cd2d3d72..c00e8d4f4d2 100644
--- a/cocos/physics/bullet/shapes/bullet-trimesh-shape.ts
+++ b/cocos/physics/bullet/shapes/bullet-trimesh-shape.ts
@@ -31,8 +31,9 @@ import { BulletCache } from '../bullet-cache';
 import { bt, EBulletType } from '../instantiated';
 import { BulletBvhTriangleMeshShape } from '../bullet-bvh-triangle-mesh-shape';
 
+/** @mangle */
 export class BulletTrimeshShape extends BulletShape implements ITrimeshShape {
-    private btBVHMeshShape;
+    private btBVHMeshShape: BulletBvhTriangleMeshShape | null = null;
     public get collider (): MeshCollider {
         return this._collider as MeshCollider;
     }