The external approach of deviated nose plastic surgery adopts a U-shaped incision of nasal columella, which extends to the front edge of alar cartilage on both sides, and then separates subcutaneous tissue upward. This incision has good exposure. The incision of intranasal approach is on the upper edge of alar cartilage of bilateral nasal vestibule, cut into an arc, and passes through the front edge of septal cartilage, so that the two incisions are combined into one.