The invention relates to a municipal administration plastic cement site edge sizing device, and discloses a device for sizing the position of the turnup edges of plastic cement faces in cooperation continuous lifting and pressing by heating the edges of the plastic cement faces. The municipal administration plastic cement site edge sizing device is characterized in that a through hole is formed inthe middle portion of the bottom end of a body box, one end of a guide sleeve is arranged in the through hole in the bottom of the body box and is connected with the bottom of the body box, and the other end of the guide sleeve is arranged in the body box; a graphite heater is arranged between the inner wall of the body box and the outer wall of the guide sleeve, an air cylinder body is arrangedat the middle portion of the top end of the body box and is communicated with the body box, and a piston plate is arranged in the air cylinder body in a sliding manner and is provided with an air hole; a sliding block is arranged in the air cylinder body and is located below the piston plate, a hole groove is formed in the middle portion of the sliding block, the connecting sleeve is arranged in the body box, and one end of the connecting sleeve is connected with the sliding block; and one end of a connecting rod is arranged at the middle portion of the piston plate, and the other end of the connecting rod sequentially penetrates the hole groove in the middle portion of the sliding block and the connecting sleeve to be arranged in the guide sleeve.