Dull and yellowish face may be related to skin dehydration, dietary factors, ultraviolet stimulation, sleep deprivation, jaundice and other conditions, which can be improved by life conditioning and medication according to the causes. 1. Skin dehydration: If the skin is dehydrated, it may lead to yellowing and lack of light, patients need to replenish enough water every day to avoid body dehydration. 2. Dietary factors: If you drink strong tea or coffee for a long time, it may indirectly affect your skin color. You need to avoid drinking such drinks and try to take fresh vegetables, fruits and other foods rich in vitamin C as the main. 3. Ultraviolet radiation stimulation: If the skin is stimulated by ultraviolet radiation for a long time, it will cause the skin to become dull and rough. You need to pay attention to sunscreen in a timely manner, when you go out, you need to apply sunscreen to reduce ultraviolet radiation stimulation. If necessary, you can use skin care products containing niacinamide, ursolic acid and other ingredients. 4. Lack of sleep: If the patient is not enough sleep for a long time, it will affect the metabolic effect of the skin. Need to adjust their own sleep time, if long-term insomnia, if necessary, can follow the doctor’s instructions oral alprazolam, eszopiclone and other drugs to relieve. 5. Jaundice: If the patient has jaundice, it will lead to yellowing of the skin, but it will manifest as systemic symptoms. Patients need to be treated by using drugs such as polyene phosphatidylcholine and prostaglandin. Patients should consult the doctor in time to find out the cause of the disease, and then follow the doctor’s instructions to carry out the corresponding adjustment and treatment, and should not use drugs privately.