There are several reasons for pimples on lips: 1, endocrine disorders, sebaceous glands around the lips secrete too much, resulting in the blockage of hair follicles and local bacterial infection caused by folliculitis; 2, herpes simplex caused by herpes simplex virus infection, patients usually have high mental stress, emotional depression, frequent constipation, like to eat spicy, hot food, stomach fire is too strong, resulting in gastrointestinal damp heat, it will cause pimples on the lips; you need to look at the type of pimples on the lips and the accompanying symptoms, combined with personal dietary habits, to clarify the diagnosis of the condition. You can use heat-clearing and laxative Chinese herbal medicine for regulation under the advice of your doctor, together with antibiotic cream, salicylic acid and retinoic acid, etc. You need to use the medicine correctly to reduce the irritation to the skin.