The invention discloses a manufacturing tool for a shaftless helical blade. The manufacturing tool for the shaftless helical blade comprises a working table and a tool body, wherein a motor on the tool body is connected with a speed reducer; the speed reducer is connected with a screw shaft; a first adjusting element is arranged on the surface of the working table and is positioned on one side ofa shaft end at a position where the speed reducer is connected with the screw shaft; a second adjusting element is arranged on the surface of the working table and is positioned at an end of the otherside of a rotating shaft; a first adjusting plate is arranged on the upper surface of a first T-shaped connecting plate; bolts are arranged on two sides of the first adjusting plate; the first adjusting plate is connected with the upper surface of the first T-shaped connecting plate through the bolts; a second adjusting plate is arranged on the upper surface of a second T-shaped connecting plate;bolts are arranged on two sides of the second adjusting plate; and the second adjusting plate is connected with the upper surface of the first T-shaped connecting plate through the bolts. The manufacturing tool for the shaftless helical blade is reasonable in structure and convenient to use; materials are saved when the helical blade is manufactured; the manufacturing tool is convenient and is high in efficiency; and the production cost of the helical blade is reduced.