diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
index 2128a704d..555fe685f 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
@@ -2,3 +2,44 @@
 #include "usb_mem.h"
 
 
+
+void *usb_hc_malloc(size_t size){
+    void *result = malloc(size);
+
+    if (result)
+    {
+        memset(result, 0U, size);
+    }
+
+    return result;
+}
+
+
+void *usb_hc_malloc_align(size_t align, size_t size)
+{
+    size_t flag, adj_size;
+
+    flag = align & (align - 1);
+
+/* 
+ * align should be a power of 2. 
+ */
+    if(flag != 0)
+        return NULL;
+
+    adj_size = (size + (align - 1)) &~ (align);
+
+    void *result = malloc(size);
+
+    if (result)
+    {
+        memset(result, 0U, size);
+    }
+
+    return result;
+}
+
+void usb_hc_free(void* ptr){
+    if(ptr != NULL)
+        free(ptr);
+}
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
index 7697ac59b..95e7c12ec 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
@@ -7,6 +7,7 @@
 #define USB_MEM_H_
 
 #include <stddef.h>
+#include "usb_config.h"
 
 #define USB_MEM_ALIGNX __attribute__((aligned(CONFIG_USB_ALIGN_SIZE)))
 
@@ -14,5 +15,9 @@ void *usb_hc_malloc(size_t size);
 void usb_hc_free();
 void *usb_hc_malloc_align(size_t align, size_t size);
 
+#define usb_malloc(size)                    usb_hc_malloc(size)
+#define usb_free(ptr)                       usb_hc_free(ptr)
+#define usb_align(align, size)              usb_hc_malloc_align(align, size)  
+
 
 #endif