Cough is a common symptom of cancer patients. Lung cancer patients will have coughing symptoms, which is due to the condition of lung cancer patients’ lungs, but why will esophageal cancer patients cough after radiotherapy? What should be done if the cough is very strong? As we all know, for esophageal cancer patients, they can be cured by radiotherapy to destroy cancer cells without surgery. However, even though radiotherapy is one of the main treatments for esophageal cancer, radiotherapy has certain side effects like surgery and chemotherapy. Only, this side effect is much smaller than surgery and chemotherapy. The coughing symptom of esophageal cancer patients after radiotherapy may be caused by radiation pneumonia, respiratory mucous membrane damage infection, diet or esophagotracheal fistula. Therefore, it is important to understand the exact cause of the cough after the onset of coughing symptoms before further symptomatic treatment is given. If the cough is very severe, it is likely that the infection is caused by damage to the mucous membrane of the respiratory tract after radiation therapy and requires antibacterial and anti-inflammatory treatment to suppress the cough, but do not blindly take some cough medicine to prevent the throat from becoming inflamed and producing phlegm to block the airway. For cough caused by radiation pneumonia, hormone therapy is an option, but it also has certain side effects. Patients can listen to the advice of professional doctors and take drugs that stop coughing and have no toxic side effects to relieve the condition. There is another condition that may also cause a patient’s cough after radiation therapy. For example, eating. If this is the cause, it is important to actively adjust the diet or eating style. If the cough is caused by radiation therapy to an esophagotracheal fistula, then the placement of an esophageal stent should be considered. Obviously, regardless of the cause of cough, adopting the right treatment method is the most beneficial treatment for patients, especially to consult a professional doctor before choosing the treatment method. Although the side effects brought by radiotherapy to esophageal cancer patients are not significant, they cannot be ignored and may lead to more serious complications if measures are not taken in advance. Family members should encourage esophageal cancer patients to maintain a good state of mind, adopt correct treatment methods to promote the cure of the disease and actively cooperate with the treatment for early recovery.