Vehicle antitheft alarm utilizing mobile communication network alarming

The utility model relates to an automobile burglarproof alarm without changing the inner circuit of the mobile phone and influencing the quality of the mobile phone, which has simple structure and uses the mobile communication network to alarm. The utility model comprises a power circuit, a sensor circuit, a control circuit, a mobile phone circuit plate, a control circuit plate and a subscriber telephone, which is characterized in that a plurality of contact pieces are arranged on the control circuit plate, each contact piece is corresponding to each X-direction lead wire and each Y-direction lead wire of the mobile phone circuit plate, a plurality of analog switches are arranged on the control circuit plate, the analog switches are corresponding to the corresponding key position on the mobile phone circuit plate.