The invention discloses a projector sliding door motor control method. The control method comprises the steps of collecting an environment temperature value; obtaining a motor rotary speed value according to a pre-stored temperature-rotary speed relation table, or obtaining a motor frequency value according to a pre-stored temperature-frequency relation table; and controlling a sliding door motorto drive a sliding door to be opened according to the motor rotary speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to be closed according to the motor rotary speed value or the motor frequency value. Through the pre-stored temperature-rotary speed relation table or the pre-stored temperature-frequency relation table, the sliding door motorcan be dynamically controlled according to different temperatures, so that it is ensured that the projector electric sliding door can be opened or closed as normal at different temperatures.