diff --git a/components/bt/host/bluedroid/stack/obex/include/obex_int.h b/components/bt/host/bluedroid/stack/obex/include/obex_int.h
index 4512e89c2a..baab7a986d 100644
--- a/components/bt/host/bluedroid/stack/obex/include/obex_int.h
+++ b/components/bt/host/bluedroid/stack/obex/include/obex_int.h
@@ -24,10 +24,6 @@
 #define OBEX_STATE_OPENING          1       /* Starting to open a connection */
 #define OBEX_STATE_OPENED           2       /* Connection opened */
 
-/* Store 16 bits data in big endian format, not modify the p_buf */
-#define STORE16BE(p_buf, data)          do { *p_buf = ((data)>>8)&0xff; \
-                                             *(p_buf+1) = (data)&0xff;} while(0)
-
 /* OBEX Connection Control block */
 typedef struct {
     tOBEX_MSG_CBACK     *callback;      /* Connection msg callback function */
diff --git a/components/bt/host/bluedroid/stack/obex/obex_api.c b/components/bt/host/bluedroid/stack/obex/obex_api.c
index befabb0e92..ab224ce78c 100644
--- a/components/bt/host/bluedroid/stack/obex/obex_api.c
+++ b/components/bt/host/bluedroid/stack/obex/obex_api.c
@@ -34,7 +34,7 @@ static inline void obex_server_to_tl_server(tOBEX_SVR_INFO *server, tOBEX_TL_SVR
 static inline void obex_updata_packet_length(BT_HDR *p_buf, UINT16 len)
 {
     UINT8 *p_pkt_len = (UINT8 *)(p_buf + 1) + p_buf->offset + 1;
-    STORE16BE(p_pkt_len, len);
+    UINT16_TO_BE_FIELD(p_pkt_len, len);
 }
 
 /*******************************************************************************
@@ -343,7 +343,7 @@ UINT16 OBEX_BuildRequest(tOBEX_PARSE_INFO *info, UINT16 buff_size, BT_HDR **out_
         /* byte 4: flags */
         *p_data++ = info->flags;
         /* byte 5, 6: maximum OBEX packet length, recommend to set as our mtu*/
-        STORE16BE(p_data, info->max_packet_length);
+        UINT16_TO_BE_FIELD(p_data, info->max_packet_length);
         pkt_len += 4;
         break;
     case OBEX_OPCODE_SETPATH:
@@ -357,7 +357,7 @@ UINT16 OBEX_BuildRequest(tOBEX_PARSE_INFO *info, UINT16 buff_size, BT_HDR **out_
         break;
     }
 
-    STORE16BE(p_pkt_len, pkt_len);
+    UINT16_TO_BE_FIELD(p_pkt_len, pkt_len);
     p_buf->len = pkt_len;
     *out_pkt = p_buf;
     return OBEX_SUCCESS;
@@ -405,14 +405,14 @@ UINT16 OBEX_BuildResponse(tOBEX_PARSE_INFO *info, UINT16 buff_size, BT_HDR **out
         /* byte 4: flags */
         *p_data++ = info->flags;
         /* byte 5, 6: maximum OBEX packet length, recommend to set as our mtu */
-        STORE16BE(p_data, info->max_packet_length);
+        UINT16_TO_BE_FIELD(p_data, info->max_packet_length);
         pkt_len += 4;
         break;
     default:
         break;
     }
 
-    STORE16BE(p_pkt_len, pkt_len);
+    UINT16_TO_BE_FIELD(p_pkt_len, pkt_len);
     p_buf->len = pkt_len;
     *out_pkt = p_buf;
     return OBEX_SUCCESS;
@@ -465,7 +465,7 @@ UINT16 OBEX_AppendHeader(BT_HDR *pkt, const UINT8 *header)
     pkt->len += header_len;
     /* point to packet len */
     p_data++;
-    STORE16BE(p_data, pkt->len);
+    UINT16_TO_BE_FIELD(p_data, pkt->len);
     return OBEX_SUCCESS;
 }
 
@@ -524,7 +524,7 @@ UINT16 OBEX_AppendHeaderRaw(BT_HDR *pkt, UINT8 header_id, const UINT8 *data, UIN
     *p_start++ = header_id;
     if (store_header_len) {
         /* store header length */
-        STORE16BE(p_start, header_len);
+        UINT16_TO_BE_FIELD(p_start, header_len);
         p_start+= 2;
     }
     /* store data */
@@ -532,7 +532,7 @@ UINT16 OBEX_AppendHeaderRaw(BT_HDR *pkt, UINT8 header_id, const UINT8 *data, UIN
     pkt->len += header_len;
     /* point to packet len */
     p_data++;
-    STORE16BE(p_data, pkt->len);
+    UINT16_TO_BE_FIELD(p_data, pkt->len);
     return OBEX_SUCCESS;
 }