Lower lip swelling is generally considered to be caused by allergy or trauma, according to different causes should choose different treatments such as physical therapy, medication, etc. to reduce swelling. 1. Allergy: allergy is when the body’s immune system from the air, contact with the allergens in the body, there is an overreaction, resulting in swelling symptoms, the patient can be under the guidance of a doctor to use loratadine tablets, levocetirizine hydrochloride tablets and other anti-allergy drugs for the treatment of inhibition of vasodilatation, so as to reduce the swelling, patients with hepatic insufficiency should be careful to use. 2. Trauma: the lower lip area after the injury local inflammatory exudate, exudate accumulation in the wound around the wound, resulting in wound infection, thus causing the swelling and pain can be the first ice packs, the first 24 hours to take the appropriate cold compresses, 72 hours after the appropriate hot compresses can play a role in reducing swelling and pain. It is recommended that patients pay attention to rest during the recuperation period, avoid exertion, avoid spicy stimulating food, drink more water, enhance the body’s immunity. Lower lip swelling, please go to the hospital in a timely manner to avoid delaying the condition.