Neuroedema of the lips is considered to be caused by the following reasons: First, it is considered to be caused by allergies, for example, patients who eat foods that can cause allergies in the body may have edema, such as seafood and drugs. Secondly, it is considered to be caused by food stimulation, and it is necessary to abstain from eating foods that are too spicy and stimulating. Drinking a lot of alcohol can lead to over-stimulation and cause neuroedema in the lip area. Third, the stimulation of certain objects in the air can also lead to the appearance of this symptom, including willow wool, flying dust, pollen, etc. Fourth, inflammatory infections may also lead to this phenomenon, such as labyrinthitis and contact labyrinthitis, which can cause neuroedema of the patient’s lips. To sum up, patients with neuroedema of the lips should go to a regular hospital for relevant examinations to clarify the specific causes before they can be treated under the guidance of a doctor.