Throat ulcers after radiotherapy can be relieved by anti-inflammatory, analgesic and nutritional support. Throat ulcers after radiotherapy are caused by the side effects of radiotherapy, anti-inflammatory and analgesic drugs can be given at this time, such as oral diclofenac sodium extended-release capsules, etc.; can also be used externally to alleviate the pain of the relevant drugs to promote the healing of the ulcers; swelling and pain symptoms are more serious, you may also need to further oral antibiotics, such as amoxicillin capsule, cefprozil tablets, cefaclor extended-release tablets and so on. Usually pay attention to keep the mouth clean, pay attention to light diet, try to eat some easily digestible food, such as rice soup, rotten noodles, etc., eat more vegetables and fruits, supplement vitamins. Avoid eating too hot food, as well as spicy stimulating food such as chili peppers, garlic and so on. It is recommended that patients standardize the treatment under the guidance of physicians to avoid delaying the condition.