Vehicle interphone system

The utility model provides a vehicle interphone system which comprises a plurality of microphones, an interphone, a switcher, a control power supply, a player and a sound box, the microphones are connected with an audio writing end of the interphone, and an input end of the switcher is respectively connected with an output end of the player and an output end of the interphone. Wherein the output end of the switcher is correspondingly connected with a sound box in an automobile, the control power supply is connected with the interphone and the switcher, the switcher is internally provided witha switching circuit, the switching circuit comprises a normally closed contact, a normally open contact, a change-over switch and an induction coil, the induction coil is connected with the control power supply, and the normally closed contact is parallel to the normally open contact. And the normally-closed contact is arranged at one end close to the induction coil. According to the vehicle-mounted interphone system prov