Provided is a mobile terminal comprising a PCB board, an audio module and an earphone socket, wherein a half-open first slot is provided on the PCB board, and the earphone socket comprises a ground pin. The earphone socket further comprises a first and second additional ground pin, the first additional ground pin and the second additional ground pin are both electrically connected to the ground pin, and the second additional ground pin is used for connecting to the audio module via a first metal connecting line, wherein the metal connecting line is laid on the PCB board, and bypasses the slot on the PCB board. Further provided is an earphone socket. The mobile terminal and the earphone socket of the present application can prevent the connecting line between the ground pin in the earphone socket and the audio module from affecting a slot antenna and will not hinder normal use of the earphone socket.