Adjustable opening device for two cheeks of mouth

The utility model discloses an adjustable mouth two-cheek dilator which comprises a crescent support body, an arc-shaped connecting rod is arranged above the crescent support body, the connecting rod is connected with one end of a movable block, the other end of the movable block is hinged to a base body, a penetrating threaded hole is formed in the center of the base body, a bolt is screwed into the threaded hole, and the base body is connected with the arc-shaped connecting rod. The head of the bolt abuts against the movable block. According to the utility model, the structure is simple, the two cheeks of the mouth are well wrapped by the crescent support bodies, the contact area is large, the stress on the cheeks in the opening process is reduced, the opening range of the two crescent support bodies is finely adjusted by rotating the bolt, and the opening accuracy is higher; the technical structures that the base body is hinged to the movable block, the bolt and the like are adopted, the adjustable two-che