Esophageal cancer is one of the most common cancers nowadays, and it is also one of the most “hidden” cancers. Many patients have already reached middle or late stage when they find esophageal cancer, which brings limitations to treatment and patients lose the chance of cure. Therefore, it is helpful to know the early symptoms of esophageal cancer for early detection of abnormalities and early treatment. 1. Fullness and light pain in the fossa, subxiphoid region or upper abdomen. It is more obvious when eating dry food, but it does not happen every time and is intermittent. This is often an early symptom of cardia cancer. The above early symptoms usually last for more than 3 months, and when they occur frequently, persistently and get worse, they are not early. Foreign body sensation when swallowing food. During the process of swallowing food (especially dry and hard food) through the lesion area (the lesion is very small) may produce a foreign body sensation, and often fixed in one part, some patients described as having the feeling of never finish swallowing something. Because the symptoms are mild and occur intermittently, it is easy for patients to neglect. 3.Distension or slight pain behind the sternum. This symptom is not constant, but is intermittent or worsens after exertion and when eating quickly. This is because the esophagus itself is peristaltic at any time, and symptoms appear only when peristalsis reaches the site of the lesion. 4. A feeling of distension or tightness in the chest, often accompanied by a dry feeling in the throat. The patient complains that there is always a stuffy phenomenon in the front part of the chest, which seems to be blocked by an object, making the chest a feeling of tightness, which is especially obvious when swallowing food, but it does not affect normal life and work. 5.Swallowing stagnation or staccato feeling. Swallowing stagnation or frustration, that is, the patient swallowing food seems to have a momentary stagnation in a certain part of the frustration of the feeling, this situation is also non-continuous, only in the development of the lesion is gradually obvious.