The utility model discloses a novel frame mixer, including host computer, (mixing) shaft, agitator and stirring rake piece, the (mixing) shaft sets up in the agitator perpendicularly, the upper end and the host computer of (mixing) shaft are connected, and the middle part is connected stirring rake piece, lower part are fixed on the support, the support is fixed on the built-in fitting, the (mixing) shaft is spiral agitating shaft, and it includes the center pin and encircle at center pin outlying spiral plate, center pin and spiral plate are even as an organic whole, the stirring rake piece is for falling the U-shaped, the stirring rake piece along spiral agitating shaft is symmetry setting, be provided with flexible scraper blade on the stirring rake piece, flexible scraper blade passes through fix with rivet with one side that the stirring rake piece is connected, the opposite side of flexible scraper blade contacts with the medial surface of agitator, with the edge of the flexible scraper blade that the agitator medial surface contacted is flexible rippled edge. Compare with traditional cylindric (mixing) shaft, the utility model provides high stirring efficiency.