diff --git a/inc/mpp_buffer.h b/inc/mpp_buffer.h
index 9ff31f84..ee544a12 100644
--- a/inc/mpp_buffer.h
+++ b/inc/mpp_buffer.h
@@ -317,6 +317,7 @@ MPP_RET mpp_buffer_group_get(MppBufferGroup *group, MppBufferType type, MppBuffe
 MPP_RET mpp_buffer_group_put(MppBufferGroup group);
 MPP_RET mpp_buffer_group_clear(MppBufferGroup group);
 RK_S32  mpp_buffer_group_unused(MppBufferGroup group);
+size_t  mpp_buffer_group_usage(MppBufferGroup group);
 MppBufferMode mpp_buffer_group_mode(MppBufferGroup group);
 MppBufferType mpp_buffer_group_type(MppBufferGroup group);
 
diff --git a/mpp/base/mpp_buffer.cpp b/mpp/base/mpp_buffer.cpp
index f523efb5..ff7e468e 100644
--- a/mpp/base/mpp_buffer.cpp
+++ b/mpp/base/mpp_buffer.cpp
@@ -310,6 +310,17 @@ RK_S32  mpp_buffer_group_unused(MppBufferGroup group)
     return unused;
 }
 
+size_t mpp_buffer_group_usage(MppBufferGroup group)
+{
+    if (NULL == group) {
+        mpp_err_f("input invalid group %p\n", group);
+        return MPP_BUFFER_MODE_BUTT;
+    }
+
+    MppBufferGroupImpl *p = (MppBufferGroupImpl *)group;
+    return p->usage;
+}
+
 MppBufferMode mpp_buffer_group_mode(MppBufferGroup group)
 {
     if (NULL == group) {