The utility model relates to an automatic calibration device of a motor vehicle steering control force tester. The automatic calibration device comprises a workbench, and a steering device test assembly and a pedal device test assembly which are arranged on the workbench, a tension sensor, an industrial personal computer, a driving device and a tension hook are arranged in the workbench; the industrial personal computer outputs a control signal; the driving device receives the control signal and provides tension output for the tension hook, the tension hook is connected with tension rings in the steering device testing assembly and the pedal device testing assembly and transmits the tension, and the tension sensor is connected with the tension hook and used for reading a tension value provided by the driving device; the steering device test assembly and the pedal device test assembly are arranged on the same test platform, so that the detection equipment can be simplified, and the detection efficiency can be improved.