Abstract: In the course of the superfine - grinding processing, use MATLAB to solve the problem of the curve-fitting, and utilize MATLAB very strong drawing function to finish the drawing of the figure. Use MATLAB to not only improve working drriciency but also improve work quality, make MATLAB be applied in the powder body processing. Meanwhile, its result produces certain guidance function to reality. This text with ball-milling to superfine grind natural zeolite as example, effectively utilize MATLAB carry on curve fitting and draw figure.