diff --git a/backend/test/project/ws-backlog-page/ws-epic.e2e-spec.ts b/backend/test/project/ws-backlog-page/ws-epic.e2e-spec.ts
new file mode 100644
index 0000000..beccb4a
--- /dev/null
+++ b/backend/test/project/ws-backlog-page/ws-epic.e2e-spec.ts
@@ -0,0 +1,196 @@
+import { Socket } from 'socket.io-client';
+import { app, appInit } from 'test/setup';
+import {
+  getMemberJoinedLandingPage,
+  getTwoMemberJoinedLandingPage,
+} from '../ws-common';
+
+describe('WS epic', () => {
+  beforeEach(async () => {
+    await app.close();
+    await appInit();
+    await app.listen(3000);
+  });
+
+  describe('epic create', () => {
+    it('should return created epic data', async () => {
+      const [socket1, socket2] = await getTwoMemberJoinedLandingPage();
+      socket1.emit('joinBacklog');
+      socket2.emit('joinBacklog');
+      await Promise.all([initBacklog(socket1), initBacklog(socket2)]);
+      const name = '회원';
+      const color = 'yellow';
+      const requestData = {
+        action: 'create',
+        content: { name, color },
+      };
+      socket1.emit('epic', requestData);
+      await Promise.all([
+        expectCreateEpic(socket1, name, color),
+        expectCreateEpic(socket2, name, color),
+      ]);
+      socket1.close();
+      socket2.close();
+    });
+
+    const expectCreateEpic = (socket, name, color) => {
+      return new Promise<void>((resolve) => {
+        socket.once('backlog', async (data) => {
+          const { content, action, domain } = data;
+          expect(domain).toBe('epic');
+          expect(action).toBe('create');
+          expect(content?.id).toBeDefined();
+          expect(content?.name).toBe(name);
+          expect(content?.color).toBe(color);
+          resolve();
+        });
+      });
+    };
+  });
+
+  describe('epic delete', () => {
+    it('should return deleted epic data', async () => {
+      const [socket1, socket2] = await getTwoMemberJoinedLandingPage();
+      socket1.emit('joinBacklog');
+      socket2.emit('joinBacklog');
+      await Promise.all([initBacklog(socket1), initBacklog(socket2)]);
+      const name = '회원';
+      const color = 'yellow';
+      let requestData: any = {
+        action: 'create',
+        content: { name, color },
+      };
+      socket1.emit('epic', requestData);
+
+      const [id] = await Promise.all([getEpicId(socket1), getEpicId(socket2)]);
+
+      requestData = {
+        action: 'delete',
+        content: { id },
+      };
+
+      socket1.emit('epic', requestData);
+      await Promise.all([
+        expectDeleteEpic(socket1, id),
+        expectDeleteEpic(socket2, id),
+      ]);
+
+      socket1.close();
+      socket2.close();
+    });
+
+    const expectDeleteEpic = (socket, id) => {
+      return new Promise<void>((resolve) => {
+        socket.once('backlog', async (data) => {
+          const { content, action, domain } = data;
+          expect(domain).toBe('epic');
+          expect(action).toBe('delete');
+          expect(content?.id).toBe(id);
+          resolve();
+        });
+      });
+    };
+  });
+
+  describe('epic update', () => {
+    it('should return updated epic data when update color', async () => {
+      const socket = await getMemberJoinedLandingPage();
+      socket.emit('joinBacklog');
+      await initBacklog(socket);
+      const name = '회원';
+      let color = 'yellow';
+      let requestData: any = {
+        action: 'create',
+        content: { name, color },
+      };
+      socket.emit('epic', requestData);
+      const id = await getEpicId(socket);
+
+      color = 'green';
+      requestData = {
+        action: 'update',
+        content: { id, color },
+      };
+
+      socket.emit('epic', requestData);
+      await expectColorUpdateEpic(socket, id, color);
+
+      socket.close();
+    });
+
+    const expectColorUpdateEpic = (socket, id, color) => {
+      return new Promise<void>((resolve) => {
+        socket.once('backlog', async (data) => {
+          const { content, action, domain } = data;
+          expect(domain).toBe('epic');
+          expect(action).toBe('update');
+          expect(content?.id).toBe(id);
+          expect(content?.color).toBe(color);
+          resolve();
+        });
+      });
+    };
+
+    it('should return updated epic data when update name and color', async () => {
+      const socket = await getMemberJoinedLandingPage();
+      socket.emit('joinBacklog');
+      await initBacklog(socket);
+      let name = '회원';
+      let color = 'yellow';
+      let requestData: any = {
+        action: 'create',
+        content: { name, color },
+      };
+      socket.emit('epic', requestData);
+      const id = await getEpicId(socket);
+
+      name = '프로젝트';
+      color = 'purple';
+      requestData = {
+        action: 'update',
+        content: { id, color, name },
+      };
+
+      socket.emit('epic', requestData);
+      await expectNameAndColorUpdateEpic(socket, id, name, color);
+
+      socket.close();
+    });
+
+    const expectNameAndColorUpdateEpic = (socket, id, name, color) => {
+      return new Promise<void>((resolve) => {
+        socket.once('backlog', async (data) => {
+          const { content, action, domain } = data;
+          expect(domain).toBe('epic');
+          expect(action).toBe('update');
+          expect(content?.id).toBe(id);
+          expect(content?.color).toBe(color);
+          expect(content?.name).toBe(name);
+          resolve();
+        });
+      });
+    };
+  });
+});
+
+const initBacklog = async (socket: Socket) => {
+  return await new Promise<void>((resolve, reject) => {
+    socket.once('backlog', (data) => {
+      const { action, domain } = data;
+      if (action === 'init' && domain === 'backlog') {
+        resolve();
+      } else reject();
+    });
+  });
+};
+
+const getEpicId = (socket) => {
+  return new Promise((resolve) => {
+    socket.once('backlog', async (data) => {
+      const { content, action, domain } = data;
+      if (domain === 'epic' && action === 'create') {
+        resolve(content.id);
+      }
+    });
+  });
+};
diff --git a/backend/test/project/ws-common.ts b/backend/test/project/ws-common.ts
index 7944c8a..f13ec68 100644
--- a/backend/test/project/ws-common.ts
+++ b/backend/test/project/ws-common.ts
@@ -1,4 +1,61 @@
 import { Socket } from 'socket.io-client';
+import {
+  app,
+  connectServer,
+  createMember,
+  createProject,
+  getProjectLinkId,
+  joinProject,
+  memberFixture,
+  memberFixture2,
+  projectPayload,
+} from 'test/setup';
+
+export const getMemberJoinedLandingPage = async () => {
+  let socket;
+  await new Promise<void>(async (resolve, reject) => {
+    const accessToken = (await createMember(memberFixture, app)).accessToken;
+    const project = await createProject(accessToken, projectPayload, app);
+
+    socket = connectServer(project.id, accessToken);
+    handleConnectErrorWithReject(socket, reject);
+    handleErrorWithReject(socket, reject);
+    await emitJoinLanding(socket);
+    await initLanding(socket);
+    resolve();
+  });
+  return socket;
+};
+
+export const getTwoMemberJoinedLandingPage = async () => {
+  let socket1;
+  let socket2;
+  await new Promise<void>(async (resolve, reject) => {
+    // 회원1 회원가입 + 프로젝트 생성
+    const accessToken = (await createMember(memberFixture, app)).accessToken;
+    const project = await createProject(accessToken, projectPayload, app);
+    const projectLinkId = await getProjectLinkId(accessToken, project.id);
+
+    // 회원2 회원가입 + 프로젝트 참여
+    const accessToken2 = (await createMember(memberFixture2, app)).accessToken;
+    await joinProject(accessToken2, projectLinkId);
+
+    socket1 = connectServer(project.id, accessToken);
+    handleConnectErrorWithReject(socket1, reject);
+    handleErrorWithReject(socket1, reject);
+    await emitJoinLanding(socket1);
+    await initLanding(socket1);
+
+    socket2 = connectServer(project.id, accessToken2);
+    handleConnectErrorWithReject(socket2, reject);
+    handleErrorWithReject(socket2, reject);
+    await emitJoinLanding(socket2);
+    const memberId2 = await initLandingAndReturnId(socket2);
+    await expectUpdatedMemberStatus(socket1, 'on', memberId2);
+    resolve();
+  });
+  return [socket1, socket2];
+};
 
 export const handleConnectErrorWithReject = (
   socket: Socket,