The invention discloses an automobile brake pad steel backing oil immersion device. The automobile brake pad steel backing oil immersion device comprises a sealing cover, a rotating drum, an oil immersion cylinder, oil immersion rods, a rotating disk, an oil storage tank, an oil pump and a separating sleeve; the oil immersion cylinder is fixed to the top of the oil storage tank through a bracket;one end of the oil immersion cylinder is connected with the sealing cover; a mechanical seal is arranged in the middle of the sealing cover; a driving shaft is erected in the mechanical seal; the inner end of the driving shaft is connected with the rotating drum; and the multiple oil immersion rods are welded to the outer side of the rotating drum circumferentially. Connected automobile brake padsteel backings are separated through the separating sleeve, the situation that oil immersion of the automobile brake pad steel backings is affected due to the fact that the adjacent automobile brake pad steel backings are closely attached is avoided, the automobile brake pad steel backings can be subjected to oil immersion in batch, the oil immersion effect is good, oil immersion is complete, excess oil can be removed, the quality of oil immersion is improved, waste of oil is reduced, and the cost of oil immersion is lowered.