The utility model discloses a clamp used for coating sliver paste on a substrate. The clamp used for coating the sliver paste on the substrate comprises a base. A substrate containing groove is arranged in the upper surface of the base. A net plate is arranged on the base. The middle of the net plate is provided with an opened groove which is identical with the substrate containing groove in the upper surface of the base. The net plate is tightly pressed on the base through a U-shaped plate. Screw holes are arranged in corresponding positions of a side wall of the base and a side wall of the U-shaped plate and screw bolts are used for fixing the base and the U-shaped plate. A handheld scraping blade slides in the opened groove in the net plate. The clamp used for coating the sliver paste on the substrate is reasonable in structure, capable of rapidly and accurately coating the silver paste on a substrate of a linear displacement sensor. By fixedly connecting the base and the U-shaped plate with the screw bolts, the U-shaped plate is prevented from moving when the handheld scraping blade slides, and thereby uniformity of the silver paste is not influenced, working efficiency is high and operation is simple.