Students’ dull and yellowish skin may be related to malnutrition, hepatitis B and anemia, and treatment requires attention to strengthening nutrition, anti-viral hepatoprotection treatment and blood replenishment treatment. 1. Malnutrition leads to dull and yellowish skin, you can pay attention to strengthen the nutritional way to improve the skin quality, such as taking more protein, vitamin-rich food, such as milk, eggs and fresh vegetables and so on. 2. Hepatitis B causes yellowish and dull skin, in terms of treatment, first of all, we should give antiviral drug treatment, and secondly, according to the condition of liver function, we can give medication to protect the liver, such as liver protection tablets. 3. Yellowing and dullness of the skin caused by anemia, in the treatment is mainly to clarify the cause of the disease, the cause of the treatment at the same time, give some blood replenishment drugs, such as strengthening the spleen and blood granules, ferrous sulfate oral solution and so on. Due to the complexity of the cause of the disease, it is necessary to go to a regular medical institution and ask a specialist to conduct an interview before choosing the appropriate way of treatment.