Esophageal cancer generally refers to esophageal cancer, which does not have the most obvious clinical manifestations of esophageal cancer, and patients often have symptoms such as choking sensation, foreign body sensation, difficulty in swallowing, etc. Usually, some patients may have choking sensation or foreign body sensation behind the sternum after eating. Usually, patients with esophageal cancer do not have obvious symptoms in early stage, and only some of them may have choking sensation or foreign body sensation behind the sternum after eating, which usually does not appear continuously, and most of them will reappear after a few days or months of interval. Some patients may also have burning and tingling sensation in the upper abdomen. If the patient’s condition develops to the middle or late stage, it will also manifest as progressive dysphagia, and the patient may also have persistent pain in the retrosternal or interscapular region. Meanwhile, some patients may suffer from malnutrition due to long-term dysphagia, which may be accompanied by weight loss and emaciation. Lower esophageal cancer may also involve the gastroesophageal conjunction, resulting in symptoms of blood in stool or hemoptysis. If it invades into neighboring organs, it may be accompanied by hoarseness, respiratory difficulty, shock and even death. It is suggested that patients should pay attention to the above symptoms in time, and if it is clearly diagnosed as esophageal cancer, they should follow the doctor’s instruction to treat it actively.