The present invention relates to the field of electric vehicles and more particularly relates to a method for visiting a parameter setting system. The technical scheme is that motor temperature lines is set to be short-circuited as the effective condition of visiting the parameter setting system, since the short circuit phenomenon of the thermistor in a motor is not short-circuited even at minus 100 degrees, and the technical scheme that the motor temperature lines are set to be short-circuited as the effective condition of visiting the parameter setting system is reliable and safe. By using the already existed motor temperature lines of an electric vehicle, the motor temperature lines are provided with an existed switch or two motor temperature lines are connected directly, a circuit signal is generated, combined with the software setting of a whole vehicle controller, the technical scheme of the invention can be realized, when the switch is closed, a user can enter the parameter setting system, the use of special equipment is not needed, and the operation is simple.