diff --git a/paddle/parameter/Argument.cpp b/paddle/parameter/Argument.cpp
index 2b945de18a4cdc3712ac7e282494ed7d3ecc600d..b0e9e740c84e6445a59b1edff7272461090c2922 100644
--- a/paddle/parameter/Argument.cpp
+++ b/paddle/parameter/Argument.cpp
@@ -677,6 +677,7 @@ void Argument::reorganizeSeqInfo(
     const ICpuGpuVectorPtr subSeqStartPos,
     std::vector<std::vector<int>>& reorganizedSeqInfo) {
   CHECK(seqStartPos);
+  reorganizedSeqInfo.clear();
 
   int seqNum = seqStartPos->getSize() - 1;
   int* seqStarts = seqStartPos->getMutableData(false);