diff --git a/core/src/main/java/com/safframework/rxcache/CacheRepository.java b/core/src/main/java/com/safframework/rxcache/CacheRepository.java
index 9a3f174..fb0e143 100644
--- a/core/src/main/java/com/safframework/rxcache/CacheRepository.java
+++ b/core/src/main/java/com/safframework/rxcache/CacheRepository.java
@@ -316,7 +316,7 @@ protected boolean containsKey(String key) {
         }
     }
 
-    protected boolean checkKey(String key) {
+    protected boolean checkKey(String key) throws RxCacheException {
         try {
             return getStringData(key)!=null;
         } catch (Exception e){
diff --git a/core/src/main/java/com/safframework/rxcache/RxCache.java b/core/src/main/java/com/safframework/rxcache/RxCache.java
index f572232..cb203e4 100644
--- a/core/src/main/java/com/safframework/rxcache/RxCache.java
+++ b/core/src/main/java/com/safframework/rxcache/RxCache.java
@@ -279,6 +279,7 @@ public boolean containsKey(String key) {
     /**
      * 校验 RxCache 是否可以获取这个 key
      * @param key
+     * @throws RxCacheException
      * @return
      */
     public boolean checkKey(String key) throws RxCacheException {
diff --git a/example/src/main/java/persistence/TestCheckKey.java b/example/src/main/java/persistence/TestCheckKey.java
index f3ba1c9..3997a01 100644
--- a/example/src/main/java/persistence/TestCheckKey.java
+++ b/example/src/main/java/persistence/TestCheckKey.java
@@ -1,6 +1,7 @@
 package persistence;
 
 import com.safframework.rxcache.RxCache;
+import com.safframework.rxcache.exception.RxCacheException;
 import com.safframework.rxcache.persistence.disk.impl.DiskImpl;
 
 import java.io.File;
@@ -27,11 +28,15 @@ public static void main(String[] args) {
         RxCache.config(new RxCache.Builder().persistence(diskImpl));
 
         RxCache rxCache = RxCache.getRxCache();
-        Boolean result  = rxCache.checkKey("test");
-        System.out.println(result);
+        try {
+            Boolean result = rxCache.checkKey("test");
+            System.out.println(result);
+
+            if (!result) {
+                rxCache.remove("test");
+            }
+        } catch (RxCacheException e) {
 
-        if (!result) {
-            rxCache.remove("test");
         }
     }
 }