The invention relates to a horizontal well delivery tractor perforating tool. A release pup joint, a rotary pup joint, an upper centralizer, a braking pup joint, a magnetic positioning pup joint, a tractor, a lower centralizer, a flexible pup joint, a safe power supplying pup joint, a shock absorber, a perforator and a rolling ball gun tail are successively connected integrally from top to bottomin a screw threaded mode, and a cable headstall is connected with downhole equipment in a threaded mode. The horizontal well delivery tractor perforating tool is adopted in horizontal well perforatingconstruction, the centralizer can always keep the tractor in the middle state to ensure stable working of the tractor, the braking pup joint can provide the resistance required for upwarping horizontal well operation, the flexible pup joint can change the rigidity of the retractor perforating tool assembly to ensure perforating delivery, and the safe power supplying pup joint ensures electrical safety of the perforator and can prevent perforating accidents. The horizontal well delivery tractor perforating tool can be applied to operation under various working conditions such as first sectionperforating, bridge plug seat sealing reperforating and perforating in horizontal well with large vertical ratio, the construction time is short, the working intensity is low, and the horizontal perforation benefit is high.