diff --git a/services/distributeddataservice/libs/distributeddb/communicator/src/protocol_proto.cpp b/services/distributeddataservice/libs/distributeddb/communicator/src/protocol_proto.cpp
index 73c99c0c1feb88a892fbdf6c1175ebb99e4f4842..28bf63a4d8b30525c7c351467b936f2bf23c7e6c 100755
--- a/services/distributeddataservice/libs/distributeddb/communicator/src/protocol_proto.cpp
+++ b/services/distributeddataservice/libs/distributeddb/communicator/src/protocol_proto.cpp
@@ -292,7 +292,8 @@ int ProtocolProto::AnalyzeSplitStructure(const ParseResult &inResult, uint32_t &
 
     // Secondly: Check fragCount and fragNo
     uint32_t lengthBeSplit = frameLen - sizeof(CommPhyHeader);
-    if (fragCount < MIN_FRAGMENT_COUNT || fragCount > lengthBeSplit || fragNo >= fragCount) {
+    if (fragCount < MIN_FRAGMENT_COUNT || fragCount > lengthBeSplit ||
+        fragNo >= fragCount || fragCount == 0) {
         LOGE("[Proto][ParsePhyOpt] FragCount=%u or fragNo=%u illegal.", fragCount, fragNo);
         return -E_PARSE_FAIL;
     }