Banana plug and electrocardio lead wire

The utility model discloses a banana plug and an electrocardio lead wire. The banana plug comprises a shell sleeve, a plug main body and an external conductive part, the shell sleeve comprises a fixing hole; the plug main body comprises a fixing part which is fixedly connected in the fixing hole; the fixing part is provided with a limiting surface; the limiting face and the inner wall face of the fixing hole interfere with each other in the radial direction of the fixing hole. And the external conductive piece is welded with one end of the plug main body provided with the fixing part. Through the above mode, the banana plug can be fixed so as to reduce the situation that the plug main body rotates relative to the shell sleeve, so that the connection part of the plug main body and the external conductive member is not easy to break, and the situation of poor contact in the banana plug is reduced so as to improve the reliability of the banana plug. 本申请公开了香蕉插头和心电导联线，该香蕉插头包括壳套、插头主体以及外接导电件；壳套包括固定孔；插头主体包括固定部，固定部固定连