The utility model provides a self -adaptation tray tongs belongs to the robotechnology field. It has solved current box tongs can not snatch the tray scheduling problem. The utility model discloses a body frame, the two sets of tray claw units of setting on the body frame and an actuating mechanism who drives two sets of tray claw unit move or keep away from, each is organized tray claw unit and includes tray claw fixed plate respectively and set up one row of tray claw on tray claw fixed plate, the upper end of each tray claw and the tray claw fixed plate rigid coupling that corresponds, the lower extreme is provided with the pothook, one row and their pothook syntropy setting are arranged into to the tray claw of tray claw unit on the same group, with the pothook of each tray claw of another group's tray claw unit in opposite directions, the tray tongs is still including the 2nd actuating mechanism who drives the relative body frame up -and -down motion of two sets of tray claw units. The utility model discloses set up two sets of tray claw units, an actuating mechanism and the 2nd actuating mechanism, can realize picking tray not unidimensional, weight through above -mentioned each structure.