Weight loss after radiotherapy for nasopharyngeal carcinoma usually recovers gradually after 3-6 months, which still depends on the state of daily life after radiotherapy. If it is early stage nasopharyngeal cancer, after simple radiotherapy, patients’ active training and dietary regulation, the weight will usually return to normal in about 3-6 months, and if the physical condition is poorer and the age is older, the recovery time will be relatively longer. After radiotherapy for nasopharyngeal carcinoma, it is usually accompanied by mucous membrane damage of the throat. Attention should be paid to improving living habits, eating a light diet, avoiding spicy and stimulating food, maintaining sufficient water intake and good sleep, and appropriate physical exercise to enhance personal immunity. If there is any abnormality during the recovery period, you should go to the hospital in time for review and give appropriate treatment after clarifying the cause.