Swelling of the flesh in the cheek next to the tooth may be parotitis, benign hypertrophy of the parotid gland or a parotid tumor. Depending on the situation, it needs to be treated with medication or surgery. 1. Parotitis: Decrease in body resistance or bacterial infection, viral infection, can cause acute or chronic parotitis, parotid swelling, pain and fever, treatment can use antibacterial drugs such as metronidazole, amoxicillin, antiviral drugs, ribavirin, etc., and pus need to be incised and drained. 2. Benign hypertrophy of parotid gland: endocrine disorders, malnutrition factors may cause benign hypertrophy of parotid gland, parotid gland repeated swelling without pain, the main symptomatic treatment, swelling symptoms of self-massage of the gland to promote glandular emptying. 3. Tumor of parotid gland: Tumor of parotid gland, such as pleomorphic adenoma, can cause swelling of parotid gland, which is clearly defined by touching with hands, and is nodular in shape, and after diagnosis, it is usually surgically excised, together with normal tissues outside the envelope of the tumor. If there is abnormal swelling in the cheek area, it is recommended to go to the hospital for examination and treatment in a timely manner to avoid aggravation of the symptoms affecting oral health, and the use of medication should be in accordance with the doctor’s prescription.