The invention discloses a computerized flat knitter knitting and jacquard weaving reverse stitch needle control method. The method comprises the steps that firstly, a selection needle, a spring needle and a long needle of a computerized flat knitter synchronously enter a needle walking groove; secondly, a knitter head swings left and right, and a crochet needle is in a reverse stitch weaving state; thirdly, a selection needle device base swings after a selection needle device works, and the selection needle enters a selection needle reverse stitch knitting needle walking groove through a first needle push triangle and a second needle push triangle; fourthly, the spring needle walking groove changes along with the selection needle reverse stitch knitting needle walking groove, a stepping motor works and rotates by 45 degrees, a right connection needle pressing piece and a left connection needle pressing piece slide upwards, a doubling stitch pressing piece slides downwards, the spring needle enters the groove from the lower end of a back stitching triangle, passes through the space between the right and left needle connection pressing pieces and a W-shaped sheet, the stepping motor works, a reverse stitch guide block protrudes upwards inside a bottom plate, the long needle enters the groove through the space between the upper end of the back stitching triangle and a stitch density guide block, passes through the space between the stitch density guide block and the W-shaped sheet and the space between the reverse stitch guide block and a sharp mountain, at the moment, the long needle pushes the crochet needle, and crochet needle reverse stitch knitting is achieved.