The system is equipped with advanced bottom plate device and yarn shear device, which have broken through the two major problems in the domestic flat knitting machine field and reached the international advanced level. This technology has been well applied in the hovering machine. The bottom plate lifting device adopts the principle of movable release, so that the closed composite needle can effectively realize its functions of yarn hanging and stripping. The yarn clamping and cutting device and the bottom plate lifting device complement each other. Only when they work together can they fully play their due role, effectively reduce yarn waste and improve production efficiency. This series adopts digital technology to realize the knitting functions of flat knitting machine, such as turning over needle, hanging eye, picking hole, inlaying, jacquard, open closing needle, dark closing needle and other regular patterns. It can knit basic knitting Organization (four flat, one side, etc.), multi-color regular jacquard, inlaying (leading Tasha), twist, picking hole and other weft knitting organizations.