The swelling of the lower lip can be caused by the following common clinical reasons: a. Patients with multiple ulcers or dental abscesses in the oral cavity can cause the swelling of the lower lip, at this time, patients can be given oral metronidazole tablets, watermelon cream tablets and other drugs to control the bacterial infection in the oral cavity, for patients with dental abscesses, dental extraction if necessary, and the swelling of the lip can be gradually relieved after the inflammation of the oral cavity is controlled. Second, the patient can cause damage to the soft tissues of the lower lip due to inadvertent fall, thus causing obvious swelling symptoms, local ice packs need to be given to reduce tissue exudation, and after 24 hours, local hot ointment packs can be given externally, and drugs such as blood circulation and stasis pills and swelling pain can be taken orally to promote faster recovery of the swollen soft tissues of the lower lip.