Automobile motor controller

The invention relates to an automobile motor controller, which is applied between a power battery and a drive motor, and the automobile motor controller comprises a shell, a controller main body which is arranged inside the shell, a bus plug connector and a program writing module. The controller main body is electrically connected with the power battery and the drive motor, and the controller main body comprises a control program storage device; the bus plug connector is exposed out of the shell and used for a bus card to plug, and the bus plug connector is communicated with a principal computer through the bus card; and the program writing module is arranged inside the shell and electrically connected to the bus plug connector and the controller main body, and the program writing module is used for receiving writing the control program storage device after receiving the bus information transmitted by the principal computer. Due to the adoption of the automobile motor controller, the debugging efficiency of a motor system can be improved, and the accidental damage of the existing motor controller caused by frequent opening of a cover can be avoided.