An unloading mechanism comprises a bottom plate, a material taking assembly arranged on the bottom plate and a material storage assembly arranged adjacent to the material taking assembly. The material taking assembly comprises a drive part, a material pressing part and a material taking part, wherein the drive part is connected on the bottom plate, and the material pressing part is connected on the drive part and comprises an abutting pressing part far away from the drive part. The material taking part comprises a connecting rod and a suction portion, wherein one end of the connecting rod is arranged on the bottom plate, the other end of the connecting rod is movably contained in the material pressing part, and the suction portion is arranged at one end, where the connecting rod is contained by the material pressing part and protrudes the abutting pressing portion. The material storage part comprises a base plate which is used for bearing and being pasted with base films of multiple work pieces and pressing plates which are laminated on the base plate, and multiple through holes are formed in the pressing plates in a penetrating mode and correspond to the work pieces one by one. The suction portion can stretch into the through holes and suck the work pieces. The drive part can drive the material pressing part to move toward the base films so that the base films can be abutted and pushed till the work pieces depart from the base films. The unloading mechanism is simple in structure and high in working efficiency.