diff --git a/paddlespeech/audio/src/pybind/pybind.cpp b/paddlespeech/audio/src/pybind/pybind.cpp
index c61575f41..e7f307ca3 100644
--- a/paddlespeech/audio/src/pybind/pybind.cpp
+++ b/paddlespeech/audio/src/pybind/pybind.cpp
@@ -19,4 +19,5 @@ PYBIND11_MODULE(_paddleaudio, m) {
     m.def("ComputeFbankStreaming",
           &paddleaudio::kaldi::ComputeFbankStreaming,
           "compute fbank streaming");
+    m.def("ComputeKaldiPitch", &paddleaudio::kaldi::ComputeKaldiPitch, "compute kaldi pitch");
 }