After laser treatment of nevus of Ota, it is necessary to keep the treatment area clean and dry, and strictly protect it from sunlight; it is not allowed to touch water before local scabs are formed, and attention is paid to the protection of scabs after the scabs are formed to prevent infections or premature removal of the scabs leading to local pigment abnormalities, scarring and other undesirable consequences. Nevus of Ota is mainly manifested as mottled skin damage, the etiology is unclear, for sun exposure, changes in sex hormones and sleep deprivation may be triggers, usually using laser treatment without clear adverse effects, although invasive treatment but the process is simpler, faster recovery, but the specific treatment, you should go to a regular hospital for consultation and treatment. In daily life, we should pay attention to exposure to the sun, avoid fatigue, stay up late, etc., pay attention to rest, and eat more fresh vegetables and fruits in the diet, such as spinach, tomatoes, bitter melon, etc., in order to increase the intake of vitamin C to promote wound healing.