diff --git a/ext-codec/AACRtp.cpp b/ext-codec/AACRtp.cpp
index 6ac5fa66..c9e4bfea 100644
--- a/ext-codec/AACRtp.cpp
+++ b/ext-codec/AACRtp.cpp
@@ -103,7 +103,7 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
         ptr += len;
         au_header_ptr += 2;
 
-        if (_frame->size() == (size_t)size) {
+        if (_frame->size() >= (size_t)size) {
             // 设置当前audio unit时间戳
             _frame->_dts = _last_dts + i * dts_inc;
             flushData();