Automobile auxiliary brake device

The utility model discloses an auxiliary brake device of an automobile. The device comprises a base and a transmission case, a gearbox is fixedly mounted at the left part of the upper end of the base;a supporting seat is fixedly mounted at the right part of the upper end of the base; a shaft rod is movably mounted between the gearbox and the supporting seat; the middle part of the shaft rod is fixedly connected with an auxiliary brake arm; the end, away from the shaft rod, of the auxiliary brake arm is fixedly connected with a pedal. A first screw hole is formed in the middle of the upper endof the base; a vertical plate is fixedly installed at the left front corner of the upper end of the base, a stay wire pipe is fixedly connected to the upper portion of the front end of the vertical plate, the end, away from the vertical plate, of the stay wire pipe is fixedly connected with the lower portion of the front end of the transmission box, a second screw hole is formed in the middle ofthe bottom wall of an inner