There are many causes of blistered lips, usually caused by factors such as labyrinthitis and herpes of the mouth and lips. Usually pay attention to proper rest, more exercise, improve resistance and minimize recurrence. 1, lip inflammation: especially allergic lip inflammation, patients appear clustered small blisters on the lip mucosa after contact with sunlight or eating mangoes, using lipstick, etc., often accompanied by itching or burning sensation, can apply antibiotic ointment or hormonal ointment for relief, to be oozing crust and then wet dressing, wet dressing available saline; 2, oral and lip herpes: often caused by Herpes simplex infection, a contagious skin disease, can be transmitted through direct contact with blister exudate, but also through indirect contact with contaminated dishes, towels and other items. The onset of the disease is characterized by clusters of blisters on the lips, which later break down and crust over, with burning and painful sensations, and a feeling of exertion and fatigue. Herpes simplex is not too serious, and can be applied to the affected area with acyclovir ointment, which will subside in a few days. In addition, over-eating spicy food, lack of vitamins, emotional tension, stress, staying up late, etc., also easy to trigger the lips blister, which is also known as “fire” in Chinese medicine. It is recommended to drink more water, eat some vitamin-rich fruits and vegetables, combine work and rest, relax and avoid staying up late.