The invention discloses a method for enhancing the turbulence of softness abrasive flow. The turbulence of the softness abrasive flow is enhanced in a mode of combining fluid collision and a thread structure; the fluid collision is that fluid passes through two runners respectively, the two runners are converged at one point, the fluid passing through the runners collides at the converging point,the continuous collision of two paths of fluid and the reciprocating oscillatory motion of solid particles in the softness abrasive flow cause violent mixing of the fluid in the colliding area, and the turbulence characteristic is enhanced in the mixing process; and the thread structure is that pipe walls of the runners, through which the fluid passes through, are provided with threads which havea larger thread pitch, and periodic concave walls are formed on the wall surfaces to enhance the turbulence characteristic. The method has the advantages of simple structure, easy design and manufacture, easier implementation of the turbulence state of the abrasive flow, realization of irregularity of fluid motion, matched use of constraint modules and constraint runners, design of serializable modules according to different workpieces, reduction of cost, and reduction of preparation time in an earlier stage of processing.