Esophageal cancer is a malignant tumor that originates in the esophagus, and the exact etiology is unclear. It has a great relationship with dietary habits. Clinically, progressive dysphagia is the most typical symptom. Early symptoms of esophageal cancer are mostly inconspicuous and easily ignored by patients. In the early stage, when patients are eating, the food they swallow passes through the esophagus very slowly or has the feeling of staying, especially when the food is dry and hard, the swallowing is not very smooth. This symptom is not obvious, sometimes light, sometimes heavy, often do not pay attention to. Feeling that there is a foreign body in the esophagus, often feeling that there are leaves stuck in the esophagus and other sensations. Feeling that the throat is dry, always feel like drinking water, some have slight pain. Symptoms are more pronounced when eating rough foods. Feeling of rising and tightness or slight pain at the sternum after eating quickly or after exertion and when there are big mood swings. The duration of these symptoms varies or even none. Eating habits play an important role in preventing esophageal cancer. Try not to eat food that is too hot or too rough, ban smoking and alcohol, and eat less spicy food. Prevent irritation to esophageal mucosa. Early esophageal cancer symptoms are not obvious, so it is recommended to go to hospital regularly for physical examination or checkup for early prevention, early detection and early treatment.