The invention discloses a large hopper manufacturing method, wherein the upper part of a hopper is equipped with a cylindrical barrel body, and the lower part of the hopper is equipped with a taperedhopper which is round and square. The large hopper manufacturing method is characterized by comprising the following steps of: a, unloading; b, drilling; c, bending and forming a wall plate of the hopper; d, assembling; e, welding; f, pre-assembling; and g, coating. The large hopper manufacturing method has the advantages that hopper manufacturing steps are reasonable in design, operability is strong, manufacturing is convenient, construction is simple and convenient, a construction period is short, project quality is guaranteed to be excellent, hopper manufacturing engineering cost is reduced, and the good result of saving 0.1035 million RMB is achieved.