It takes about 3~6 months to recover from oral cancer surgery. Adjuvant radiotherapy, maintaining oral hygiene and good mindset can help promote recovery. 1. Adjuvant radiotherapy: For middle and advanced oral cancer, comprehensive treatment plan is usually adopted, and adjuvant radiotherapy after surgery can reduce the risk of metastasis and recurrence. 2. Maintain oral hygiene: you can start brushing teeth about 3 days after surgery, and be careful not to stimulate the wound and skin flap. Maintain the habit of oral cleanliness in daily life and have regular oral checkups. 3. Maintain a good mindset: a positive mindset also plays a positive role in the recovery of the disease. If there is a delay in recovery after oral cancer surgery or other symptoms, it is recommended to go to the hospital in time to receive regular treatment as early as possible.