diff --git a/ap/lib/libaudiomix/include/audiomix_lib.h b/ap/lib/libaudiomix/include/audiomix_lib.h
new file mode 100755
index 0000000..5d88b23
--- /dev/null
+++ b/ap/lib/libaudiomix/include/audiomix_lib.h
@@ -0,0 +1,17 @@
+
+/*
+ * Copyright (C) 2019 ZTE, China
+ *
+ * This is the header file for the audio_mix lib.
+ *
+ */
+#include <linux/volte_drv.h>
+
+#ifndef __AUDIO_MIX_LIB_H
+#define __AUDIO_MIX_LIB_H
+
+ int zDrvAudioMix_Write(unsigned char *pBuf, unsigned int uiLen);
+ int zDrvAudioMix_Open(T_ZDrvAudioMix_Cfg *cfgParam);
+ int zDrvAudioMix_Close(void);
+
+#endif