The mouth is crooked after parotid tumor surgery, mainly by means of drug treatment, traditional Chinese medicine treatment, facial function exercise, etc. First, drug treatment: if the mouth is crooked after parotid adenoma surgery, B vitamins can be given to nourish the nerves in the early stage. Representative drugs for treatment include mecobalamin, cobalamin adenosine, etc. Second, traditional Chinese medicine treatment: acupuncture treatment and massage treatment are mainly adopted to improve local circulation. Third, facial function exercise: after the mouth is crooked and grows, the facial expression muscles can be exercised. If through active rehabilitation training, the patient still cannot recover after 2-3 months, there may be sequelae.