The utility model belongs to the technical field of equipment for medical experiments, particularly relates to an animal behavior following rat cast device and mainly solves the problem that manual rat casting is big in experimental errors and high in probability of injuring people. The technical scheme is that the animal behavior following rat cast device comprises a rat casting board, a main shaft, an electromagnet, a cast cylinder and the like, wherein double torsional springs are wound on the main shaft and used for tensioning a base and the rat casting board; an iron control board is arranged in the middle of the main shaft and positioned between the base and the rat casting board; an auxiliary shaft is arranged at the rear part of the base; a clamp tongue is connected with the auxiliary shaft through a clamp hole in the rear lower part of the clamp tongue; a clamping groove is formed in the rear upper part of the clamp tongue; when the rat casting board is expanded, the rear part of the rat casting board is clamped in the clamping groove; a hook is arranged in the front of the clamp tongue, also arranged in a transverse groove in the rear part of the iron control board and movably connected with the main shaft; the electromagnet is arranged on the upper surface of the base and positioned below the iron control board; the casting cylinder is arranged on the housing of the rat casting board. The animal behavior following rat cast device has the advantages of small experimental errors and strong security.