The hand-cranked corn thresher has simple structure, low breakage rate, clean threshing, and the output can reach 70 kilograms per hour. The hand-cranked corn thresher is composed of a handle, a handle, a rotating shaft, a hub, a support plate, a bracket, a plug-in plate, a spoke, a shield, a tool holder, and a blade. On the wooden board, the right side of the shaft is the insert plate and the bracket, which can fix the shield, the right end of the shaft is connected to one end of the handle, and the other end of the handle is the handle, the left end of the shaft is the insertion hole for the spoke, and the other end of the spoke is welded on the tool holder. Four blade fixing holes are evenly distributed on the blade holder. The product is simple in structure, low in cost, suitable for use by individual farmers, and easy to operate.