After the spot spotting, avoid inducing infection, such as not to get wet, not to scrub with hands, and consider applying anti-inflammatory creams such as fusidic acid or erythromycin or clindamycin for anti-inflammatory and anti-infection treatment, which can be applied twice a day. After the scabbing of the spot, attention should be paid to avoid scratching the artificially induced scab to fall off and aggravate the formation of scar or pit. If the healing is poor at this time, you can consider topical application of recombinant human epidermal growth factor gel to promote the healing of the skin. When the skin repair is complete after spotting, you can consider topical application of Xanax or Transaminic acid to promote the metabolism of pigmentation, and afterwards you must pay attention to wearing hat, umbrella or sunscreen to avoid aggravating pigmentation.