diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..49a0ede9
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,98 @@
+# CHANGE LOG
+## 0.1
+
+- SLF4J_PLACE_HOLDER_MISMATCH bug pattern
+- SLF4J_FORMAT_SHOULD_BE_CONST bug pattern
+- SLF4J_UNKNOWN_ARRAY bug pattern
+
+## 0.2
+
+- [bug fix] fixed findbugs.xml
+- SLF4J_LOGGER_SHOULD_BE_PRIVATE bug pattern
+
+## 0.3
+
+- SLF4J_LOGGER_SHOULD_BE_FINAL bug pattern
+- SLF4J_ILLEGAL_PASSED_CLASS bug pattern
+
+## 0.4
+
+- SLF4J_SIGN_ONLY_FORMAT bug pattern
+
+## 1.0
+
+- SLF4J_LOGGER_SHOULD_BE_NON_STATIC bug pattern
+- Redesigned priority
+
+## 1.0.1
+
+- Fixed ClassNotFoundException problem (issue #12)
+
+## 1.0.2
+
+- Fixed bug around Marker handling (issue #15)
+- Fixed bug about returned value of private/static method cannot be marked as throwable
+- Started to build with SLF4J 1.6.6 on Travis CI
+
+## 1.0.3
+
+- Fixed exception handling bug (issue #14)
+
+## 1.0.4
+
+- Fixed IllegalStateException bug (issue #17)
+- Fixed NullPointerException bug (issue #19)
+
+## 1.0.5
+
+- Fixed GETFIELD/GETSTATIC bug (issue #16)
+
+## 1.0.6
+
+- Fixed bugs which depends on compiler
+    - when use LDC_W to push String from constant pool
+    - when use LDC to push class from constant pool
+- Switch version of SLF4J from 1.7.2 to 1.7.5
+- Start depending guava-libraries 14.0.1
+- SLF4J_MANUALLY_PROVIDED_MESSAGE bug pattern
+
+## 1.0.7
+
+- Solved missing library in Maven central (issue #24)
+- Improved log message to debug (issue #18)
+
+## 1.0.8
+
+- Fixed runtime exception in detector for SLF4J_PLACE_HOLDER_MISMATCH (issue #18)
+
+## 1.0.9
+
+- Fixed overlooking problem (issue #2 and #14)
+- SonarQube plugin supports SLF4J_MANUALLY_PROVIDED_MESSAGE bug pattern
+
+## 1.0.10
+
+- Explain abstract in README.md (issue #28)
+- Supported Lombok (please disable SLF4J_LOGGER_SHOULD_BE_NON_STATIC)
+
+## 1.0.11
+
+- Fixed a bug which throws IllegalArgumentException (issue #29)
+
+## 1.1.0 and 1.1.1
+
+- Support SLF4J version 1.7.12
+- Upgrade Java to 8
+- Upgrade Findbugs to 3.0.1
+- Updated Maven plugins
+- Updated Dependencies
+
+## 1.2.0
+
+- Disabled `SLF4J_MANUALLY_PROVIDED_MESSAGE` if method parameter has no `Throwable` instance (issue #31)
+- Stop printing many WARNING in `ThrowableHandler` (issue #30)
+
+## 1.2.1
+
+- Downgrade Java to 7, to support Java 7 users (issue #33)
+- SLF4J_FORMAT_SHOULD_BE_CONST should trace caller, to stop warning if all callers use constant value (issue #35)
diff --git a/README.md b/README.md
index c2a20625..3909009d 100644
--- a/README.md
+++ b/README.md
@@ -208,105 +208,9 @@ To use this product, please configure your findbugs-maven-plugin like below.
 ```
 
 
-# history
+# change log
 
-## 0.1
-
-- SLF4J_PLACE_HOLDER_MISMATCH bug pattern
-- SLF4J_FORMAT_SHOULD_BE_CONST bug pattern
-- SLF4J_UNKNOWN_ARRAY bug pattern
-
-## 0.2
-
-- [bug fix] fixed findbugs.xml
-- SLF4J_LOGGER_SHOULD_BE_PRIVATE bug pattern
-
-## 0.3
-
-- SLF4J_LOGGER_SHOULD_BE_FINAL bug pattern
-- SLF4J_ILLEGAL_PASSED_CLASS bug pattern
-
-## 0.4
-
-- SLF4J_SIGN_ONLY_FORMAT bug pattern
-
-## 1.0
-
-- SLF4J_LOGGER_SHOULD_BE_NON_STATIC bug pattern
-- Redesigned priority
-
-## 1.0.1
-
-- Fixed ClassNotFoundException problem (issue #12)
-
-## 1.0.2
-
-- Fixed bug around Marker handling (issue #15)
-- Fixed bug about returned value of private/static method cannot be marked as throwable
-- Started to build with SLF4J 1.6.6 on Travis CI
-
-## 1.0.3
-
-- Fixed exception handling bug (issue #14)
-
-## 1.0.4
-
-- Fixed IllegalStateException bug (issue #17)
-- Fixed NullPointerException bug (issue #19)
-
-## 1.0.5
-
-- Fixed GETFIELD/GETSTATIC bug (issue #16)
-
-## 1.0.6
-
-- Fixed bugs which depends on compiler
-    - when use LDC_W to push String from constant pool
-    - when use LDC to push class from constant pool
-- Switch version of SLF4J from 1.7.2 to 1.7.5
-- Start depending guava-libraries 14.0.1
-- SLF4J_MANUALLY_PROVIDED_MESSAGE bug pattern
-
-## 1.0.7
-
-- Solved missing library in Maven central (issue #24)
-- Improved log message to debug (issue #18)
-
-## 1.0.8
-
-- Fixed runtime exception in detector for SLF4J_PLACE_HOLDER_MISMATCH (issue #18)
-
-## 1.0.9
-
-- Fixed overlooking problem (issue #2 and #14)
-- SonarQube plugin supports SLF4J_MANUALLY_PROVIDED_MESSAGE bug pattern
-
-## 1.0.10
-
-- Explain abstract in README.md (issue #28)
-- Supported Lombok (please disable SLF4J_LOGGER_SHOULD_BE_NON_STATIC)
-
-## 1.0.11
-
-- Fixed a bug which throws IllegalArgumentException (issue #29)
-
-## 1.1.0 and 1.1.1
-
-- Support SLF4J version 1.7.12
-- Upgrade Java to 8
-- Upgrade Findbugs to 3.0.1
-- Updated Maven plugins
-- Updated Dependencies
-
-## 1.2.0
-
-- Disabled `SLF4J_MANUALLY_PROVIDED_MESSAGE` if method parameter has no `Throwable` instance (issue #31)
-- Stop printing many WARNING in `ThrowableHandler` (issue #30)
-
-## 1.2.1
-
-- Downgrade Java to 7, to support Java 7 users (issue #33)
-- SLF4J_FORMAT_SHOULD_BE_CONST should trace caller, to stop warning if all callers use constant value (issue #35)
+See [CHANGELOG.md](CHANGELOG.md) for detail.
 
 # copyright and license