For recurrence after laser blemish removal, patients are usually advised to continue laser treatment, and at the same time, to combine both internal and external treatment with some Chinese herbal medicine to regulate. Pay attention to a light diet and avoid spicy and stimulating food, especially pay attention to sun protection to avoid skin allergy and skin inflammation. The spots are mainly caused by genetic factors in the body, endocrine fluctuations and external stimuli, among which the common external stimuli are sun exposure, infection and dermatitis. Laser spot removal is one of the treatments for spots, but it mainly removes the formed spots, but cannot be used as a preventive measure, so there is still a possibility of recurrence after spot removal.