Beard spot generally refers to pigmentation spot. There are many factors that cause beard spot, and beard spot is generally caused by endocrine disorders, long-term ultraviolet irradiation, bad living and dietary habits, mental factors and other factors. 1. Endocrine disorders: Beard spot is mainly considered as endocrine disorders, where the hormone level in the body is disturbed and melanin cells produce too much melanin, which will form spots around the mouth and the edge of the hairline. 2. Long-term ultraviolet irradiation: long-term ultraviolet irradiation leads to hyperpigmentation and the formation of spots. 3. Others: Irregular work and rest, staying up late, failing to clean the skin regularly, and high mental stress can also lead to beard spots. Beard spots need to be examined in time to find out the cause of the disease and standardize the treatment under the guidance of the doctor, as well as pay attention to rest, eat a light diet, and do a good job of sun protection and skin care.