Pigmented nevus surgery usually requires 7~14 days to remove the stitches, the exact date of removal depends on the size and location of the pigmented nevus and the surgical method and other factors. Pigmented nevus is a benign skin tumor of melanocyte origin, according to the size and location of pigmented nevus, it can be removed by different surgical methods, such as simple excision and suture, excision and suture + flap transfer, etc. 1. If the nevus is small, it can be directly excised and sutured. This kind of surgery has faster recovery, if the nevus is located on the head and face, the suture will be removed in 7 days, if it is located on the joint activity area or the surgical incision with reduction suture, the suture will be removed in 14 days. 2. If the nevus is large or located in the joint activity area, local flap transfer is needed to close the incision. Because of the large tension of the incision or local auxiliary incision, the suture is usually removed in 10~14 days. If infection occurs in the operation area during the healing process, or if the body itself has chronic diseases such as chronic diabetes, it is possible that the recovery time needs to be a little longer, possibly longer. The decision depends on the healing of the incision. Pigmented nevus surgery should be performed in a regular medical institution, with regular postoperative medication changes and prescribed care, and if infection occurs, you should also actively seek medical attention to avoid adverse consequences.