Motor vehicle antitheft alarming igniting device

The utility model discloses a theftproof alarming portfire for the motor vehicle, which adds a cutproof lead and a relay between an electronic switch lock and an electronic flame lighter of the electronic portfire of the prior motor vehicle. The utility model is characterized in that an autoregulation switch and an aotoalarming switch are arranged the two sides of the air bag of the cutproof lead; the utility model can automatically alarm and cut down the start information under the control of the two switches when others try to cut down the lead to steal the motor vehicle, therefore the motor vehicle can not start. The utility model does not need to change the prior device greatly, therefore has the advantages of low cost, convenient start and cutoff and good theftproof effect, and provides a perfect theftproof alarming portfire for the motor vehicle.