The flow of nostril plastic surgery: accurately measure and calculate the size of the reconstructed nose. Mark points and lines on the forehead flap to indicate the direction of blood vessel trunk; Skin was cut from the forehead hairline and dissociated to form a trilobal flap; Nasal anatomy, scar tissue removal, partial skin rejuvenation to form lining mucosa; Cut the human body longitudinally, turn it over to form the lining of the human body, pull the center of the three-leaf valve into a nose column, and the other two valves form a nose wing; Transfer the pedicled forehead flap to the nose, partially fold and sew the lining mucosa, sew the facial skin on the outer layer, and form a skin tube in the middle, that is, sew the upper back with a central column, and place a silicone prosthesis in it for plastic surgery.