The invention discloses a non-magnetic steel impact specimen grinding clamp and grinding method. The grinding clamp comprises a base body, more than one adjusting rod and jacking blocks with the samenumber as the adjusting rods; the whole base body is concentric-square-shaped; a specimen clamping area used for clamping impact specimens is arranged in the base body; the adjusting rods are installed in the base body at intervals in the length direction of the base body; the adjusting rods extend into the specimen clamping area; the lengths of the rod sections, located in the specimen clamping area, of the adjusting rods are adjustable; the jacking blocks are located in the specimen clamping area and are connected with the adjusting rods; the base body is made of magnetic steel; the height of the base body and the heights of the jacking blocks are all smaller than the heights of the impact specimens; and the impact specimens are clamped and fixed with the jacking blocks through the basebody. According to the non-magnetic steel impact specimen grinding clamp and grinding method, the grinding clamp capable of being sucked by a grinding machine is designed by utilizing the characteristics that the impact specimens are regular in shape and are same in size, the multiple impact specimens can be clamped at one time, and the grinding efficiency is greatly improved.