The invention relates to the technical field of waste square brick recycling equipment, and discloses square waste brick plane flattening treatment equipment. The square waste brick plane flattening treatment equipment comprises a machine body with the top fixedly connected with a supporting frame. A transverse position adjusting mechanism is connected between the inner walls of the two sides of the supporting frame. The two sides of the bottom of the transverse position adjusting mechanism are fixedly connected with L-shaped fixing frames. A clamp moving mechanism is fixedly connected betweenthe two L-shaped fixing frames. The middle position of the bottom of the transverse position adjusting mechanism is fixedly connected with two electric lifting rods, and pressing elements are fixedlyconnected to the tail ends of the two electric lifting rods. Through mutual cooperation of the machine body, the transverse position adjusting mechanism, the electric lifting rods, the pressing elements, the clamp moving mechanism, a drive motor, a contact flattening mechanism, a negative pressure mechanism, a residue collecting and filtering mechanism and a control panel, the problem that existing square waste brick planes cannot be well treated is solved.