There are various reasons for chin spots, mainly the following reasons: 1, do not pay attention to sun protection, too much ultraviolet radiation will make pigment aggregation to form spots; 2, incomplete cleaning, do not be too sloppy when washing your face, you should carefully clean your face; 3, gynecological diseases or abnormal liver and kidney functions, if you suspect that your own diseases cause chin spots, you should go to a regular hospital in time to receive treatment and receive the corresponding Endocrine abnormalities, unstable hormone levels cause pigment aggregation, especially for young and middle-aged women, chin spots are likely to be caused by endocrine abnormalities; 5, women’s lack of qi and blood, if women’s lack of qi and blood will also lead to long spots, they should pay attention to more rest and more nutrients; 6, radiation, it is known that cell phones and computers have radiation, long-term exposure to radiation will lead to long spots.