Abstract: An amp system for vehicle using bluetooth module is disclosed. The amp system comprising: a main body; a power supply terminal for receiving electric current from an external power source; a bluetooth-receiving module for receiving an audio signal from a bluetooth transmission module embedded in a mobile communication terminal of a user; a PCB with a device for amplifying the received audio signal; an output terminal for delivering the amplified audio signal to a speaker; and the speaker for receiving the amplified audio signal from the output terminal and generating sound, enables that by installing the bluetooth module in the amp for vehicle and communicating with user's mobile communication terminal using bluetooth communication, amplifies music or phone call sound from the mobile communication terminal through the amp for vehicle and outputs it through the speaker in vehicle.