The manifestation of small blisters on the lips itchy and swollen, the main consideration is related to herpes simplex on the lips and lips, labiitis, etc., and it is recommended that the relevant people consult the doctor in time to clarify the diagnosis. 1. Herpes simplex on the lips. For herpes simplex virus infection, mostly type 1 herpes simplex virus, the human body immunity, stay up all night and other factors stimulate easy to occur. The main manifestation of the initial stage, the infected area of the lips, itching, tingling; then can form blisters, localized edema, and will continue to be accompanied by pain, itching; to be blisters rupture scabs can be healed on their own. 2. Lipitis. The onset of chronic climatic or cosmetic irritation, frequent lip licking or lip biting habits, allergen exposure, odontogenic infection, vitamin deficiency and so on. Lips can appear in varying numbers of small blisters, mostly accompanied by pain, etc.; at the same time, there can also be lip pain, swelling, peeling, dryness, itching, cracking, oozing, vesicles and other manifestations. The symptoms of small blisters on the lips itchy and swollen should be timely consultation, follow the doctor’s instructions for treatment.