diff --git a/flossom-common/flossom-common-core/src/main/resources/mapper/WxUserInstrumentMapper.xml b/flossom-common/flossom-common-core/src/main/resources/mapper/WxUserInstrumentMapper.xml
index 1ac9443..93b2a4d 100644
--- a/flossom-common/flossom-common-core/src/main/resources/mapper/WxUserInstrumentMapper.xml
+++ b/flossom-common/flossom-common-core/src/main/resources/mapper/WxUserInstrumentMapper.xml
@@ -84,6 +84,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         select count(1) from wx_user_instrument
         <where>
             <if test="userId != null "> and user_id != #{userId}</if>
+            <if test="serial != null  and serial != ''"> and serial = #{serial}</if>
             <if test="instrumentId != null "> and instrument_id = #{instrumentId}</if>
             <if test="bindingStatus != null "> and binding_status = #{bindingStatus}</if>
             <if test="status != null "> and status = #{status}</if>
diff --git a/flossom-modules/flossom-mini-program/src/main/java/com/flossom/miniProgram/service/impl/WxInstrumentServiceImpl.java b/flossom-modules/flossom-mini-program/src/main/java/com/flossom/miniProgram/service/impl/WxInstrumentServiceImpl.java
index 40efd74..337762d 100644
--- a/flossom-modules/flossom-mini-program/src/main/java/com/flossom/miniProgram/service/impl/WxInstrumentServiceImpl.java
+++ b/flossom-modules/flossom-mini-program/src/main/java/com/flossom/miniProgram/service/impl/WxInstrumentServiceImpl.java
@@ -199,7 +199,7 @@ public class WxInstrumentServiceImpl implements IWxInstrumentService {
             /* 2.2.1、判断序列号是否被别人绑定了 */
             WxUserInstrument query = new WxUserInstrument();
             query.setUserId(wxUserMember.getId());
-            query.setInstrumentId(wxInstrumentSerial.getInstrumentId());
+            query.setSerial(serial);
             query.setStatus(Status.OK.getCode().longValue());
             query.setBindingStatus(BindingStatusEnums.BINDED.getCode());
             Integer num = wxUserInstrumentMapper.selectUiByInstrumentId(query);