The utility model discloses a surgical gown tying bag heat sealing mechanism which comprises a base, a driving motor is installed in the base, a heat sealing frame is installed at the output end of the driving motor, a supporting frame is welded to the upper end of the surface of the heat sealing frame, a lead screw is installed on the bottom face of the supporting frame, and a moving block is used on the lead screw in a matched mode. A guide groove is formed in the surface of the supporting frame, a guide block is slidably connected into the guide groove, the lower end of the guide block is welded to the top face of a moving block, a hand wheel is installed at one end of the lead screw, and a support is fixedly installed on the bottom face of the moving block. According to the utility model, the rotatable heat sealing frame is arranged, the heat sealing frame is provided with the plurality of heat sealing stations, and the plurality of heat sealing stations are alternately used in a rotating manner, so that not only can the heat sealing efficiency be improved, but also feeding and discharging can be carried out in the heat sealing process of the surgical gown tying bag, the time wasted by feeding and discharging is reduced, and the working efficiency is improved. And the heat sealing efficiency of the bag tying of the surgical gown is further improved.