Vitamins are essential nutrients for the human body, and when there is a lack of the following vitamins, they may cause symptoms of peeling lips. 1, vitamin B2: vitamin B2 has a very important role in the human body, can promote skin metabolism, protect the integrity of the skin and mucous membrane. So when the body lacks vitamin B2, the skin mucous membrane will become inflamed, resulting in the performance of the peeling lips, and in serious cases can also appear flaking, redness, ulceration, etc. 2, vitamin A: also known as retinol, it can maintain the function of the body’s cells, when vitamin A deficiency, the cell form dry flat, become irregular, or even lose function, which leads to dry lips, peeling skin, and in serious cases, night blindness, growth and development disorders and other symptoms. 3, vitamin C: vitamin C can assist in the formation of antibodies and collagen, can assist in tissue repair, help improve the body’s immunity, when the human body lacks vitamin C, the body’s resistance to decline, dry skin, there will also be the performance of peeling lips. Lip peeling is mainly caused by vitamin B2 or vitamin A deficiency in the human body, but vitamin C deficiency can also cause lip peeling. Some other lip peeling is caused by bad habits such as lip licking and lip biting. Patients are advised to drink more water, eat more fresh vegetables and fruits to replenish vitamins and pay attention to sun protection, which can prevent and control lip peeling, and can be treated with corresponding vitamins or multivitamins if necessary.