Abstract: At present, the level of diagnosis and treatment of early gastrointestinal cancer has a larger gap between China and developed countries.In recent years,the advent of new endoscopic imaging techniques has improved the detection rate of early gastrointestinal cancer.Along with this,endoscopic submucosal dissection (ESD) enables radical resection for early cancer.In this article,we discuss how to improve the level of endoscopic diagnosis and treatment of early gastrointestinal cancer.