The invention relates to an animal spinal cord injury hitting device which comprises a fixator platform. Fixing rings are arranged at the two ends of the fixator platform, sliding grooves are formed in the fixator platform, limb fixing rings are arranged on the sliding grooves, spine fixing clamping plate assemblies are arranged on the two sides of the fixator platform, vertical rods are arranged at the end of the fixator platform and sleeved with a first scale fixing plate and a second scale fixing plate, a first sliding rail is arranged on the first scale fixing plate, a second sliding rail is arranged on the second scale fixing plate, a first clamping ring is arranged on the first sliding rail, a second clamping ring is arranged on the second sliding rail, an outer casing pipe is inserted into the first clamping ring, the end of the outer casing pipe penetrates through the second clamping ring, an inner casing pipe is arranged in the outer casing pipe, a hitting needle is arranged in the inner casing pipe, and a hitting needle frequency control device is arranged on the outer casing pipe, and connected with the hitting needle. Experiment failures caused by animal hiding are effectively avoided, experiment efficiency and experiment precision are guaranteed, the structure is simple, operation is easy, and the hitting device is worthy of application and popularization.