diff --git a/common/src/main/java/com/tencent/supersonic/common/service/impl/EmbeddingServiceImpl.java b/common/src/main/java/com/tencent/supersonic/common/service/impl/EmbeddingServiceImpl.java
index c486a59c4..ea6b88363 100644
--- a/common/src/main/java/com/tencent/supersonic/common/service/impl/EmbeddingServiceImpl.java
+++ b/common/src/main/java/com/tencent/supersonic/common/service/impl/EmbeddingServiceImpl.java
@@ -49,7 +49,7 @@ public class EmbeddingServiceImpl implements EmbeddingService {
             try {
                 EmbeddingModel embeddingModel = ModelProvider.getEmbeddingModel();
                 Embedding embedding = embeddingModel.embed(question).content();
-                boolean existSegment = existSegment(embeddingStore, query, embedding);
+                boolean existSegment = existSegment(collectionName,embeddingStore, query, embedding);
                 if (existSegment) {
                     continue;
                 }
@@ -62,14 +62,14 @@ public class EmbeddingServiceImpl implements EmbeddingService {
         }
     }
 
-    private boolean existSegment(EmbeddingStore embeddingStore, TextSegment query,
+    private boolean existSegment(String collectionName,EmbeddingStore embeddingStore, TextSegment query,
             Embedding embedding) {
         String queryId = TextSegmentConvert.getQueryId(query);
         if (queryId == null) {
             return false;
         }
         // Check cache first
-        Boolean cachedResult = cache.getIfPresent(queryId);
+        Boolean cachedResult = cache.getIfPresent(collectionName+queryId);
         if (cachedResult != null) {
             return cachedResult;
         }
@@ -82,7 +82,7 @@ public class EmbeddingServiceImpl implements EmbeddingService {
         EmbeddingSearchResult result = embeddingStore.search(request);
         List<EmbeddingMatch<TextSegment>> relevant = result.matches();
         boolean exists = CollectionUtils.isNotEmpty(relevant);
-        cache.put(queryId, exists);
+        cache.put(collectionName+queryId, exists);
         return exists;
     }