The invention relates to the technical field of food forming or machining, in particular to a sweet dumpling separating device with a sweet dumpling tray capable of being circularly used. The device comprises a rack, a conveying belt used for conveying the sweet dumpling tray is arranged on the rack, the sweet dumpling tray is provided with a left clamping area and a right clamping area, the sweetdumpling tray is made of an elastic material, the rack is provided with a clamping mechanism, the clamping mechanism is provided with a left groove and right groove, the left groove is connected withone end of a left connecting rod, the right groove is connected with one end of a right connecting rod, the other end of the left connecting rod is hinged to a left fixing block, the other end of theright connecting rod is hinged to a right fixing block, through the conveying belt, the sweet dumpling tray with an opening downward is conveyed, the clamping mechanism clamps the sweet dumpling tray, the sweet dumpling tray is twisted to enable frozen sweet dumplings bonded on the sweet dumpling tray to fall down, the connecting rods rotate with the fixing block hinge position, remaining non-falling sweet dumplings fall down, the connecting rods are recovered, and the sweet dumpling tray can be recovered. Recovering of the sweet dumpling tray can be achieved, and the sweet dumpling tray canbe circularly used.