diff --git a/README.md b/README.md
index 4c35bde9..cdd53520 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,6 @@
 * [Java 并发基础常见面试题总结](docs/java/Multithread/JavaConcurrencyBasicsCommonInterviewQuestionsSummary.md)
 * [Java 并发进阶常见面试题总结](docs/java/Multithread/JavaConcurrencyAdvancedCommonInterviewQuestions.md)
 * [并发容器总结](docs/java/Multithread/并发容器总结.md)
-* [synchronized 关键字使用、底层原理、JDK1.6 之后的底层优化以及 和ReentrantLock 的对比](docs/java/synchronized.md)
 * [乐观锁与悲观锁](docs/essential-content-for-interview/面试必备之乐观锁与悲观锁.md)
 * [JUC 中的 Atomic 原子类总结](docs/java/Multithread/Atomic.md)
 * [AQS 原理以及 AQS 同步组件总结](docs/java/Multithread/AQS.md)