A steel sheet for socks-knitter needle drums is provided, which belongs to the field of fabrication technology of textile mechanical accessories. The steel sheet comprises a steel sheet main body (4). One side of the steel sheet main body (4) is a vertical face (5); the other side of the steel sheet main body (4) is composed of a plane (1), a slope (2) and a convex (3) that are connected edge by edge; length ratio between the plane (1) and the slope (2) is 1:2 to 6; inclined angle of the slope is 1 to 5 degrees. The integral body has the advantages of more reasonable and simple structure and more convenient fabrication. The upper plane structure can prevent crochet hook from being worn; the central slope structure can guarantee consistence between the steel sheet slope and the socks-knitter needle drum center, so as to increase the rotate speed of the needle drum in the whole unit, and therefore improve the product quality and production efficiency. In actual application, the effects are so ideal that the needle drum can completely fulfill stable running at the speed of 350r/min of the all PC-based full-automatic socks-knitter; meanwhile, wearing to knitting needles is extremely low and noise during the running process is considerably lower.