diff --git a/doma-core/src/main/java/org/seasar/doma/message/Message.java b/doma-core/src/main/java/org/seasar/doma/message/Message.java
index 998dd01a8..8aab2bcbb 100644
--- a/doma-core/src/main/java/org/seasar/doma/message/Message.java
+++ b/doma-core/src/main/java/org/seasar/doma/message/Message.java
@@ -930,6 +930,7 @@ public enum Message implements MessageResource {
       "If a method annotated with @MultiInsert targets immutable entities for insertion, the return type must be org.seasar.doma.jdbc.MultiResult."
           + "The type argument of org.seasar.doma.jdbc.MultiResult must be the immutable entity class."),
   DOMA4462("The property \"{0}\" is not found in the entity class \"{1}\"."),
+  DOMA4463("'{'\"execTimeMillis\": {0}, \"processor\": \"{1}\", \"element\": \"{2}\"'}'"),
 
   // other
   DOMA5001(
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/Options.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/Options.java
index d0a1f8f5e..e04b0db73 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/Options.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/Options.java
@@ -27,6 +27,8 @@ public final class Options {
 
   public static final String DEBUG = "doma.debug";
 
+  public static final String TRACE = "doma.trace";
+
   public static final String DAO_PACKAGE = "doma.dao.package";
 
   public static final String DAO_SUBPACKAGE = "doma.dao.subpackage";
@@ -122,6 +124,11 @@ public Date getDate() {
     return new Date();
   }
 
+  public boolean isTraceEnabled() {
+    String trace = getOption(TRACE);
+    return Boolean.parseBoolean(trace);
+  }
+
   public boolean isDebugEnabled() {
     String debug = getOption(DEBUG);
     return Boolean.parseBoolean(debug);
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/AbstractProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/AbstractProcessor.java
index 4bbd9c610..2a233d13b 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/AbstractProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/AbstractProcessor.java
@@ -4,6 +4,7 @@
 import java.io.StringWriter;
 import java.io.Writer;
 import java.lang.annotation.Annotation;
+import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 import javax.annotation.processing.ProcessingEnvironment;
@@ -63,7 +64,18 @@ private <E extends Element> void handleElement(
           .debug(Message.DOMA4090, new Object[] {getClass().getName(), elementNameSupplier.get()});
     }
     try {
-      handler.accept(element);
+      if (ctx.getOptions().isTraceEnabled()) {
+        long startTime = System.nanoTime();
+        handler.accept(element);
+        long endTime = System.nanoTime();
+        long execTimeMillis = TimeUnit.NANOSECONDS.toMillis(endTime - startTime);
+        ctx.getReporter()
+            .debug(
+                Message.DOMA4463,
+                new Object[] {execTimeMillis, getClass().getName(), elementNameSupplier.get()});
+      } else {
+        handler.accept(element);
+      }
     } catch (AptException e) {
       ctx.getReporter().report(e);
     } catch (AptIllegalOptionException e) {
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DaoProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DaoProcessor.java
index 932d41752..3fdd7c7d7 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DaoProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DaoProcessor.java
@@ -24,6 +24,7 @@
 @SupportedAnnotationTypes({"org.seasar.doma.Dao"})
 @SupportedOptions({
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.DAO_PACKAGE,
   Options.DAO_SUBPACKAGE,
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DataTypeProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DataTypeProcessor.java
index a9f7005bf..ff38a14b8 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DataTypeProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DataTypeProcessor.java
@@ -12,6 +12,7 @@
   Options.VERSION_VALIDATION,
   Options.RESOURCES_DIR,
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.CONFIG_PATH
 })
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainConvertersProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainConvertersProcessor.java
index 2773514fc..293003799 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainConvertersProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainConvertersProcessor.java
@@ -19,7 +19,13 @@
  * @since 1.25.0
  */
 @SupportedAnnotationTypes({"org.seasar.doma.DomainConverters"})
-@SupportedOptions({Options.RESOURCES_DIR, Options.TEST, Options.DEBUG, Options.CONFIG_PATH})
+@SupportedOptions({
+  Options.RESOURCES_DIR,
+  Options.TEST,
+  Options.TRACE,
+  Options.DEBUG,
+  Options.CONFIG_PATH
+})
 public class DomainConvertersProcessor extends AbstractProcessor {
 
   public DomainConvertersProcessor() {
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainProcessor.java
index aba0c8b88..0381e9bf2 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/DomainProcessor.java
@@ -13,6 +13,7 @@
   Options.RESOURCES_DIR,
   Options.LOMBOK_VALUE,
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.CONFIG_PATH
 })
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EmbeddableProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EmbeddableProcessor.java
index f9100bf27..1c62f1111 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EmbeddableProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EmbeddableProcessor.java
@@ -24,6 +24,7 @@
   Options.LOMBOK_VALUE,
   Options.LOMBOK_ALL_ARGS_CONSTRUCTOR,
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.CONFIG_PATH,
   Options.METAMODEL_ENABLED,
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EntityProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EntityProcessor.java
index 78e27e353..2e8017391 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EntityProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/EntityProcessor.java
@@ -32,6 +32,7 @@
   Options.LOMBOK_VALUE,
   Options.LOMBOK_ALL_ARGS_CONSTRUCTOR,
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.CONFIG_PATH,
   Options.METAMODEL_ENABLED,
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ExternalDomainProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ExternalDomainProcessor.java
index eb8a7927e..aae20af04 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ExternalDomainProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ExternalDomainProcessor.java
@@ -21,6 +21,7 @@
   Options.VERSION_VALIDATION,
   Options.RESOURCES_DIR,
   Options.TEST,
+  Options.TRACE,
   Options.DEBUG,
   Options.CONFIG_PATH
 })
diff --git a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ScopeProcessor.java b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ScopeProcessor.java
index 786f28064..8a71067fc 100644
--- a/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ScopeProcessor.java
+++ b/doma-processor/src/main/java/org/seasar/doma/internal/apt/processor/ScopeProcessor.java
@@ -14,7 +14,13 @@
 import org.seasar.doma.message.Message;
 
 @SupportedAnnotationTypes({"org.seasar.doma.Scope"})
-@SupportedOptions({Options.RESOURCES_DIR, Options.TEST, Options.DEBUG, Options.CONFIG_PATH})
+@SupportedOptions({
+  Options.RESOURCES_DIR,
+  Options.TEST,
+  Options.TRACE,
+  Options.DEBUG,
+  Options.CONFIG_PATH
+})
 public class ScopeProcessor extends AbstractProcessor {
 
   public ScopeProcessor() {