The utility model relates to an electric motor type automatic slide track parking machine which is suitable for the occasion that a hanging trolley is stopped and released on the automatic slide track of a push type hanging conveyer. The main body comprises a motor, a worm wheel reducer, a parking wheel, a controller for controlling the opening and stopping of a motor, a clamping plug protector, etc. The motor transmits the worm wheel reducer through a triangle belt to make a parking wheel which is arranged on a worm wheel shaft rotate. A positioning cam which is fixed with the parking wheel in the coaxial mode triggers an automatic closing switch, and under the control of an electric control part, the utility model ensures that the parking wheel is accurately positioned to realize that the action of the trolley which is released one by one. The parking machine has the advantages of low work noise, functions of reliable positioning and automatic lock, and protective function when the parking wheel is clamped.