The mixing blades of concrete mixer, is a relatively complex spatial surface, which is difficult to manufacture. The high cost of traditional mold making does not apply to new product development and experimental studies. So, this paper presents a rapid manufacture method of balde mold, which using the UG software for blade parametric design, and then sub-cutting it to calculate the section coordinates. According to the coordinates, the steel plate had been cut and welded into a mold, through which, the blades can be pressed. Because of its convenient and low-cost, the method is particularly applicable to the occasions of experimental research.