Intradermal suture is a suture that is inserted within the skin margin on both sides of the incision, leaving the skin surface free of pinholes and exposed sutures. The intradermal suture requires a single suture on one side of the incision to secure the suture, then a needle is inserted from the top of the incision, and the needle is removed from the same side of the skin edge, and then the needle is inserted and removed from the other side of the skin edge. Sutures are alternated between the two edges of the skin, and after two stitches, one on the left and one on the right, the suture can be tightened to close the skin. The last stitch is inserted at the end of the incision, and the needle is removed about 1 cm outside the incision and tied in place. Intradermal sutures are mostly made with absorbable sutures. After suturing, there are no pinholes on the skin surface and no exposed sutures, so the scars are smaller and more beautiful after the wound heals. Generally, this suture is used in the neck and female abdomen to ensure a certain degree of aesthetics.