diff --git a/paddlespeech/t2s/exps/diffsinger/preprocess.py b/paddlespeech/t2s/exps/diffsinger/preprocess.py
index be526eff117a1146609111b80eb0b30edb36d3e3..a60ad44d235dd604723fe00d52533bc13451fa2c 100644
--- a/paddlespeech/t2s/exps/diffsinger/preprocess.py
+++ b/paddlespeech/t2s/exps/diffsinger/preprocess.py
@@ -354,6 +354,7 @@ def main():
             mel_extractor=mel_extractor,
             pitch_extractor=pitch_extractor,
             energy_extractor=energy_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             spk_emb_dir=spk_emb_dir,
             write_metadata_method=args.write_metadata_method)
diff --git a/paddlespeech/t2s/exps/ernie_sat/preprocess.py b/paddlespeech/t2s/exps/ernie_sat/preprocess.py
index 486ed13a537bcbcecba08d52f526244bac22f718..04bbc074336a95797b4accac12d4442d752046e2 100644
--- a/paddlespeech/t2s/exps/ernie_sat/preprocess.py
+++ b/paddlespeech/t2s/exps/ernie_sat/preprocess.py
@@ -324,6 +324,7 @@ def main():
             sentences=sentences,
             output_dir=dev_dump_dir,
             mel_extractor=mel_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             spk_emb_dir=spk_emb_dir)
     if test_wav_files:
diff --git a/paddlespeech/t2s/exps/fastspeech2/preprocess.py b/paddlespeech/t2s/exps/fastspeech2/preprocess.py
index 521b9a88079613d20e8d31e526fb0b666236b155..a2353242b01128b26c9a8d8ff630be23719a46d2 100644
--- a/paddlespeech/t2s/exps/fastspeech2/preprocess.py
+++ b/paddlespeech/t2s/exps/fastspeech2/preprocess.py
@@ -382,6 +382,7 @@ def main():
             mel_extractor=mel_extractor,
             pitch_extractor=pitch_extractor,
             energy_extractor=energy_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             spk_emb_dir=spk_emb_dir,
             write_metadata_method=args.write_metadata_method)
diff --git a/paddlespeech/t2s/exps/speedyspeech/preprocess.py b/paddlespeech/t2s/exps/speedyspeech/preprocess.py
index e4084c142f6cf00791930c6de1a11078d32a26c0..75a1b0791424654e86f4a4479dfbc071bc510648 100644
--- a/paddlespeech/t2s/exps/speedyspeech/preprocess.py
+++ b/paddlespeech/t2s/exps/speedyspeech/preprocess.py
@@ -280,6 +280,7 @@ def main():
             sentences=sentences,
             output_dir=dev_dump_dir,
             mel_extractor=mel_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             use_relative_path=args.use_relative_path)
     if test_wav_files:
diff --git a/paddlespeech/t2s/exps/tacotron2/preprocess.py b/paddlespeech/t2s/exps/tacotron2/preprocess.py
index c27b9769b7daa0de8857a27129e4f52dafee717f..46b725916939ebb0aa913eada721120ba0b1432b 100644
--- a/paddlespeech/t2s/exps/tacotron2/preprocess.py
+++ b/paddlespeech/t2s/exps/tacotron2/preprocess.py
@@ -311,6 +311,7 @@ def main():
             sentences=sentences,
             output_dir=dev_dump_dir,
             mel_extractor=mel_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             spk_emb_dir=spk_emb_dir)
     if test_wav_files:
diff --git a/paddlespeech/t2s/exps/vits/preprocess.py b/paddlespeech/t2s/exps/vits/preprocess.py
index d6b226a20f8c3b1872af98dd5b9e9123ad7b7d5a..23c959d4353a45e4ed2258cc32bd845485ecfef7 100644
--- a/paddlespeech/t2s/exps/vits/preprocess.py
+++ b/paddlespeech/t2s/exps/vits/preprocess.py
@@ -321,6 +321,7 @@ def main():
             sentences=sentences,
             output_dir=dev_dump_dir,
             spec_extractor=spec_extractor,
+            nprocs=args.num_cpu,
             cut_sil=args.cut_sil,
             spk_emb_dir=spk_emb_dir)
     if test_wav_files: