The invention discloses a tensile dorsal muscle trainer for physical training, the tensile dorsal muscle trainer structurally comprises a lubricating box device, a support main body, a cushion, an auxiliary guide wheel, a holding frame and an assembly frame, when the equipment is used, through the arranged mechanism, the tensile dorsal muscle trainer can avoid the situation that the tensile dorsal muscle trainer is not prone to falling off when the tensile dorsal muscle trainer is used for exercising. The problems that due to frequent pulling at the connecting corner of the inhaul cable, the abrasion and rusting phenomena are generated, so that lubricating oil needs to be manually and frequently injected through a specific base, time is wasted, and efficiency is not high are solved, and under the cooperation of a specific matching wheel device, the lubricating oil can make contact with the outer surface of the inhaul cable through a containing groove; and the contact block is driven by pulling each time to extrude the connecting block, so that lubricating oil at the upper end is automatically added and permeated, manual intervention is reduced, more convenience is achieved, and meanwhile, an injection type storage oil pipe can be added and replaced more quickly.