The utility model relates to a material belt feeding positioner which is provided with a supporting structure, a positioning piece and a control piece, the supporting structure comprises a bottom plate and two guide plates, the two guide plates are installed on the bottom plate and form feeding material grooves in a spaced mode, and a vertical guide column is arranged on one guide plate; the positioning piece is connected to the guide column in a sleeving mode, an elastic piece support is arranged between the positioning piece and the guide plate, the positioning piece is provided with a positioning pin protruding downwards, and the positioning pin is inserted into a belt hole in a material belt in the feeding trough to feed and position the material belt; the control piece is connected with the guide column and can rotate between a first position and a second position, the control piece rotates on the upper side of the positioning piece and presses the positioning piece through the eccentric outer contour face, the positioning piece moves downwards, the positioning pins are inserted into belt holes in a material belt, the control piece makes hard contact with the positioning piece, influences of external factors are reduced, and the service life of the material belt is prolonged. Therefore, the positioning pins extend out and are positioned stably and in place, the risk that the positioning pins cannot be inserted into the belt holes due to warping of the material belt is avoided, and the positioning accuracy and stability of the material belt are improved.