上消化道早期癌及癌前病变的早期诊断,是提高其治愈率及生存率的关键。自1805年德国的Bozzini提出内镜(Endoscopy)的设想以来,已经过了近200年。期间,内镜本身的技术更新,经历了硬式内镜、纤维内镜、到目前的电子内镜的三大阶段,加上与超声技术、染色技术、放大技术等的结合,使内镜在消化系统疾病的诊断中越来越显示出特定优势。内镜技术被誉为历史上的一次革命,具有划时代的意义[1]。 Early diagnosis of upper gastrointestinal cancer and precancerous lesions is the key to improve its cure rate and survival rate. It has been nearly 200 years since Bozzini in Germany proposed the concept of endoscopy in 1805. During the endoscopic technology update, experienced hard endoscopy, endoscopic fiber, to the current three endoscopic electronic stage, coupled with the ultrasound technology, staining technology, amplification technology, so that the endoscopy in the digestion The diagnosis of systemic diseases is showing more and more specific advantages. Endoscopic technology known as a revolution in history, epoch-making significance [1].