Dermal spot is a kind of pigmentation spot formed by pigment cells deposited in the dermis, which can be clinically divided into congenital dermal spot and acquired dermal spot, and it is suggested that patients should clear the specific cause of the disease under the guidance of doctors and get rid of it through laser and medication. 1. Congenital dermal spots: congenital dermal spots, such as nevus of Ota, are usually found on the face, around the eyes and other parts of the body, and its formation is related to genetic factors, which can be removed by Q laser or picosecond laser. 2. Acquired dermal spots: Acquired dermal spots such as chloasma, its formation is generally related to endocrine, sun exposure and other factors. In the treatment, hydroquinone cream, niacinamide, arbutin can be used externally or vitamin C and vitamin E can be taken orally to assist in the lightening of the spot, and it can also be improved by means of laser. For the existence of dermal spots patients, if self-conscious about the impact on aesthetics, it is recommended to go to a regular hospital in a timely manner, under the guidance of a professional doctor for standardized treatment, and not to blindly treat on their own.