The invention discloses an iron core plate annealing clamp and belongs to the field of transformer production. The iron core plate annealing clamp comprises a frame, cross beams, supports and a handle, the cross beams are mounted on the frame, the supports are mounted on the cross beams, and the handle is mounted at the top of the frame. The frame comprises stand columns, vertical T-shaped grooves, bottom beams and side beams, the number of the stand columns is four, the vertical T-shaped grooves are formed in the centers of the stand columns, and the four stand columns are connected to form the whole frame through the pair of bottom beams and the four side beams. The cross beams comprise beam bodies, horizontal T-shaped grooves, gaps, sliding grooves and side tables, the horizontal T-shaped grooves are formed in the middles of the beam bodies, the supports are installed in the horizontal T-shaped grooves, the gaps are formed in one ends of the beam bodies and used for being embedded into the supports, the sliding grooves are formed in the two ends of the beam bodies, and the side tables are arranged at the outer ends of the sliding grooves. Each support comprises a connecting rod,vertical grooves, round heads and sliding blocks, the connecting rod of each support is connected with the multiple vertical grooves, and the corresponding sliding blocks are arranged at the bottomsof the two vertical grooves in the middle of each support and installed in the corresponding horizontal T-shaped grooves. The handle comprises a transverse rod, side hooks and a hand shank, the handleis installed on the side beams at the top of the frame, the side hooks are arranged at the two ends of the transverse rod and hook the side beams, and the hand shank is arranged in the middle of thetransverse rod.