Abstract: In order to improve the software control method of fully automatic flat knitting machine inland,the structure and theory of flat knitting machine were analyzed,and a new-style doable software design based on the hardware(ARM & FPGA) which was already chosen was proposed.This software design is based on embedded Linux,which includes the control algorithm of taker-in roller system,driver design,knit control program design and graphical user interfaces design.Compared with congener products,the machine based on this design is more advanced,easier to be transplanted,accessible in a network and low cost.It is proved to be a doable design in practice.