Esophageal cancer is a malignant tumor occurred by esophageal mucosal epithelium or esophageal glandular epithelium. Early stage of esophageal cancer has limited lesions and related symptoms are not obvious, there is no such statement as 4 signals. Some patients may have post-sternal discomfort, pulling, burning and pinching sensation, slow swallowing of food, stagnation or mild choking sensation, etc.: 1. Post-sternal pain and discomfort: pulling-like pain may appear behind the sternum, the initial symptom is mild and the duration may be short, with the development of the disease, the symptom may be aggravated and recurring; or due to the lesion, the esophagus has an obstacle in transporting food, the cardia occurs Spasmodic contraction, persistent vague pain or burning-like stabbing pain behind the sternum or in the upper abdomen, mostly when swallowing food, and the symptoms may diminish or disappear after eating; 2, pharyngeal dryness or constriction: it may be caused by the contraction of the pharyngoesophageal sphincter due to the lesion of the esophagus, producing a sense of constriction in the pharynx; 3, slow passage or stagnation of food: after swallowing food, one may feel a sense of slow movement or stagnation of food, mostly occurring in the upper and The symptoms are often mild at first, but gradually aggravated and may be accompanied by other symptoms; 4. choking sensation in esophagus: the mucous membrane of esophageal lesion is congested and swollen, which may lead to choking sensation of swallowing food, and the site is usually the esophageal lesion. Most of the early symptoms of malignant tumors are difficult to detect. It is recommended to keep the habit of frequent medical checkups so that if there are health problems, they can be dealt with in time and have a relatively good prognosis.