The hard lump at the incision of parotid adenoma after surgery may be caused by scar, and patients are advised to pay attention to the postoperative recovery, or it may be caused by postoperative infection, and patients can take medication, or it may be caused by the mass not completely removed, and patients can take surgical treatment. 1. Scarring: when patients with parotid adenoma have hard lumps at the incision after surgery, it is considered to be caused by scarring. There are stitches under the skin at the incision of surgery, and scarring will appear as the patient recovers from the incision. It is recommended that patients pay attention to the cleanliness and hygiene of the incision after surgery and ensure that the incision is dry. Patients should rest as much as possible and should not pull the incision. 2. Postoperative infection: If the patients of parotid adenoma do not take proper care of the incision after operation, it will lead to the phenomenon of infection of the incision, and the patients will also have the phenomenon of hard lumps at the incision after operation, and the patients can follow the doctor’s instructions to take antibiotics such as amoxicillin capsule and cefaclor tablets orally. 3. The swelling is not completely removed: when patients with parotid adenoma have hard lumps at the incision after operation, it may be caused by the fact that the swelling of parotid adenoma is not completely removed. Patients can follow the doctor’s advice to take surgical treatment, mainly take parotid gland extraperitoneal resection, parotid gland superficial lobectomy and other surgical methods. When patients with parotid adenoma have the symptom of hard lumps in the incision after surgery, it may be a normal phenomenon caused by scarring and does not need special treatment. If it is caused by a disease, the patient should seek medical treatment in time and follow the doctor’s instructions.