Esophageal cancer, also called esophageal cancer, is a malignant tumor occurring in the epithelial tissue of esophagus, accounting for 2% of all malignant tumors. About 220,000 people die of esophageal cancer worldwide every year, and China is a high incidence area for esophageal cancer, which is the second most common cause of death after gastric cancer, with the age of onset mostly above 40 years old and more men than women, but there is a growing trend of onset below 40 years old in recent years. The occurrence of esophageal cancer is related to the chronic stimulation of nitrosamines, inflammation and trauma, genetic factors and the content of trace elements in drinking water, food and vegetables. Early symptoms of esophageal cancer 1.Choking sensation in the throat is the most common, which can disappear and recur spontaneously and does not affect eating. It often occurs when the patient’s mood fluctuates, so it is easily mistaken for functional symptoms. 2.Posterior sternal and subxiphoid pain is more common. When swallowing food, there is pain behind the sternum or subsynovial pain, the nature of which can be burning-like, pinprick-like or pulling-like, with the swallowing of rough, burning or irritating food as the focus. Initially, it is intermittent, but when the cancer invades nearby tissues or penetrates, there can be severe and continuous pain. The site of pain often does not exactly correspond to the site of lesion in the esophagus. The pain can be temporarily relieved by antispasmodics. When swallowing food or water, there is a sensation of slow movement and retention of food, as well as a feeling of tightness behind the sternum or food adhering to the esophageal wall. The site of the symptoms is mostly the same as the site of the lesion in the esophagus. 4. Dryness and constriction in the throat is especially obvious when swallowing dry and rough food, and the occurrence of this symptom is often related to the patient’s mood swings. 5, other symptoms a few patients may have posterior sternal stuffiness and discomfort, anterior pain and koron (19) basis The above symptoms should be detected as soon as possible to prevent delay.