Generally speaking, one month or so after radiotherapy for esophageal cancer, one can eat normally, but the exact time varies from person to person, and it is also necessary to adjust the diet structure and balanced nutrition. Esophageal cancer is a kind of malignant tumor disease originated from the epithelium of esophagus, and radiotherapy is a way to treat esophageal cancer. Generally speaking, most of the patients after radiotherapy for esophageal cancer can eat normally in about one month. However, due to different factors such as severity of disease, physical quality and treatment plan of each patient, so it cannot be generalized and there are obvious individual differences. Secondly, after radiotherapy for esophageal cancer, patients need to strengthen dietary management, adjust diet structure, try to eat light, easy-to-digest food rich in vitamins, proteins and calories, ensure balanced intake of various nutrients, and suggest eating small amount of food with multiple meals, and mixing coarse and fine food with other forms of food. To sum up, patients with esophageal cancer need to actively cooperate with doctors to take standardized treatment, strengthen daily life management after radiotherapy, and follow up regularly.