The invention relates to a connector with a self short circuited mechanism. The connector comprises a plug and a socket. The socket comprises multiple insertion needle contact pieces, an insertion needle insulation installation plate ad a seat housing body. The plug comprises multiple insertion hole contact pieces, an insertion hole insulation installation plate, a head housing body and a connection cap. A reed and an insulation sleeve successively sleeve the circumference of the insertion ends of the insertion needle contact pieces from inside to outside. The insertion needle contact pieces are in threaded connection with a short circuited plate. The short circuited plate is in contact with an inner hole of the seat housing body. The short circuited plate is in abutted connection with the insertion needle insulation installation plate through a spring, moves to the reed position by bearing the acting force of the spring and is in short circuited communication with the seat housing body and the insertion needle contact pieces, or moves to the insulation sleeve position by overcoming the acting force of the spring and is in insertion communication with the insulation seat housing body and the insertion needle contact pieces.