diff --git a/sharding-orchestration/sharding-orchestration-center/sharding-orchestration-center-nacos/src/test/java/org/apache/shardingsphere/orchestration/center/instance/NacosCenterRepositoryTest.java b/sharding-orchestration/sharding-orchestration-center/sharding-orchestration-center-nacos/src/test/java/org/apache/shardingsphere/orchestration/center/instance/NacosCenterRepositoryTest.java
index 8cdab8dd66b5d2cb39069c598dedfb41462bde9b..44089895fa5895a65bed427e11c1bf651b4fa6b2 100644
--- a/sharding-orchestration/sharding-orchestration-center/sharding-orchestration-center-nacos/src/test/java/org/apache/shardingsphere/orchestration/center/instance/NacosCenterRepositoryTest.java
+++ b/sharding-orchestration/sharding-orchestration-center/sharding-orchestration-center-nacos/src/test/java/org/apache/shardingsphere/orchestration/center/instance/NacosCenterRepositoryTest.java
@@ -36,6 +36,7 @@ import java.util.Properties;
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.ArgumentMatchers.anyString;
@@ -144,6 +145,48 @@ public final class NacosCenterRepositoryTest {
         verify(configService).removeConfig("sharding.test", group);
     }
     
+    @SneakyThrows
+    @Test
+    public void assertDeleteWhenThrowException() {
+        when(configService.getConfig(eq("sharding.test"), eq(group), anyLong())).thenReturn("value");
+        doThrow(NacosException.class).when(configService).removeConfig(eq("sharding.test"), eq(group));
+        REPOSITORY.delete("/sharding/test");
+        assertNotNull(REPOSITORY.get("/sharding/test"));
+    }
+    
+    @SneakyThrows
+    @Test
+    public void assertWatchWhenThrowException() {
+        final ChangedType[] actualType = {null};
+        doThrow(NacosException.class)
+                .when(configService)
+                .addListener(anyString(), anyString(), any(Listener.class));
+        DataChangedEventListener listener = dataChangedEvent -> actualType[0] = dataChangedEvent.getChangedType();
+        REPOSITORY.watch("/sharding/test", listener);
+        assertNull(actualType[0]);
+    }
+    
+    @Test
+    @SneakyThrows
+    public void assertPersistWhenThrowException() {
+        String value = "value";
+        doThrow(NacosException.class).when(configService).publishConfig(eq("sharding.test"), eq(group), eq(value));
+        REPOSITORY.persist("/sharding/test", value);
+        assertNull(REPOSITORY.get("/sharding/test"));
+    }
+    
+    @Test
+    public void assertProperties() {
+        Properties properties = new Properties();
+        REPOSITORY.setProperties(properties);
+        assertThat(REPOSITORY.getProperties(), is(properties));
+    }
+    
+    @Test
+    public void assertGetChildrenKeys() {
+        assertNull(REPOSITORY.getChildrenKeys("/sharding/test"));
+    }
+    
     private VoidAnswer3 getListenerAnswer(final String expectValue) {
         return (VoidAnswer3<String, String, Listener>) (dataId, group, listener) -> listener.receiveConfigInfo(expectValue);
     }