我国为食管癌（多伴有贲门癌）高发区，其发病率居世界之首，大量统计资料证明；在我国高发区中最高发病率达４８－８７／１０万，而欧美国家，尤其是美国最高发病率仅为５／１０万，不同地区统计资料又证明，在我国消化系统恶性肿瘤中食管癌发病率居第２或第３位；其死亡率也 China is a high-risk area of ​​esophageal cancer (with many cardiac cancers), and its incidence rate ranks first in the world. A large number of statistical data prove that the highest incidence rate in high-incidence areas in China is 48-87 per 100,000. European and American countries, especially the United States The highest incidence rate is only 5 per 100,000. Statistical data from different regions have proved that the incidence of esophageal cancer in the digestive system malignancy in China ranks second or third; the mortality rate is also