Having spots on your face will affect your personal image, but it will also reflect some problems in your body. There are many reasons for spots, and the reasons for spots on face at 30 cannot be generalized. We need to analyze the causes of spots according to the types of spots.1. Freckles: mainly related to genetics, autosomal dominant inheritance is the characteristic. The distribution of freckles is dotted and isolated from each other, with the diameter not more than 0.5cm, often distributed on the cheeks, hands and shoulders. Avoiding sunlight and using suitable sunscreen are important to prevent the progress of the disease. Hydroquinone cream and laser can be treated but cannot prevent recurrence; 2. Melasma: It may be related to ultraviolet light, cosmetics, pregnancy, endocrine disorder and heredity. People who love make-up but do not remove make-up thoroughly, and cosmetic residues accumulate on the face in the long run will also lead to the appearance of chloasma. Chloasma is also called liver spots. Drinking and staying up late at night may cause liver damage, which may also lead to the appearance of liver spots. It is light brown, flaky, with different sizes, clear borders and irregular shapes, not higher than the skin, commonly found on the face and symmetrical on both cheeks; 3. Sun spots: improper daily care of the skin on the face, exposing the skin to too much sunlight for too long, resulting in diffuse erythema, which can be flaky and leave pigmentation when the erythema fades. In addition, long spots may also be related to the immune status of the patient’s body, mental factors, such as mental depression, tension, sadness, etc.; bad life style and other factors can also lead to the 30-year-old face spots.