Abstract: To improve the design ability for knitted fabric patterns,a preliminary study was carried out for the design method.Based on mathematics theory,patterns could be created automatically by computer with inputting different parameters of mathematical functions.The knitted fabric simulation was realized by M1 pattern design system of STOLL company.In the pattern,different color zones were replaced by obverse stitch with different colors,or obverse stitch and reverse stitch with same color separately,after that the effects of knitted fabrics could be simulated.Designing with this method,product varieties can be diversified,design efficiency enhanced and the cost lowered.It has bright prospects for application.