Positioning clamp

The utility model relates to a positioning clamp which comprises a base, a product containing groove is formed in the base, clamping assemblies are arranged on the two adjacent sides in the product containing groove, each clamping assembly comprises a clamping piece and a swing piece which are movably connected with the base, and an abutting piece for controlling the swing piece to rotate is arranged on the base. The base is further provided with a reset mechanism enabling the clamping piece to have the trend of moving towards the direction of the product containing groove all the time, the clamping piece is movably connected with the swing piece, the swing piece can control the clamping piece to move away from the direction of the product containing groove, the swing piece is provided with a power arm and a resisting arm, the power arm abuts against the abutting piece, and the resisting arm is movably connected with the clamping piece. According to the lever principle, synchronous clamping opening of the two