diff --git a/CHANGELOG.md b/CHANGELOG.md
index 239c61a33..0cbce2a7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 
 ### 新特性
 * 【socket】     对NioServer和NioClient改造（pr#992@Github）
+* 【core  】     StrUtil增加filter方法（pr#149@Gitee）
 
 ### Bug修复#
 
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index 233667b33..dfd1f4d81 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -1333,7 +1333,7 @@ public class StrUtil {
 	 * @return 清理后的字符串
 	 */
 	public static String cleanBlank(CharSequence str) {
-		return filter(str, c -> !CharUtil.isBlankChar(c));
+		return filter(str, c -> false == CharUtil.isBlankChar(c));
 	}
 
 	// ------------------------------------------------------------------------------ Split