The causes of fluid accumulation in the healed wound after parotid tumor surgery include parotid fistula or infection in the wound, which need to be treated actively after identifying the cause of the disease. 1. Parotid fistula: during parotid adenoma surgery, if the parotid duct is not carefully inspected or the damaged parotid gland is not tightly sutured due to improper operation, parotid fistula may be formed, which is manifested as the formation of fluid, and it can be treated by surgical treatment or compression bandage after draining the fluid to cure the disease. 2. Infection: when the postoperative care is not proper, the infection of pathogenic bacteria may occur and cause inflammatory exudate to form effusion, it is recommended to make incision and drainage to remove the effusion completely and use antibiotics such as penicillin, azithromycin and other medicines to control the infection, the medicines should be used in accordance with the doctor’s prescription, and after the occurrence of adverse reactions, it is necessary to consult the doctor, and the use of medicines for allergic people is prohibited. Parotid adenoma surgery after the discomfort, it is recommended to consult a doctor in a timely manner, under the guidance of a professional doctor standardized treatment, so as not to delay the condition.