Abstract: As an important diagnostic technology for digestive diseases, endoscopic technique has been applied in clinic for nearly 70 years. With the rapid development of science and technology in related disciplines, digestive endoscopy not only is widely used as a diagnostic technique, but also acts as an important role in the treatment of digestive disease. Besides the improvement of traditional treatment techniques, innovative new technologies have emerged, such as endoscopic treatment of gastrointestinal bleeding, endoscopic resection and suture of gastrointestinal lesions, diagnosis and treatment of biliary and pancreatic diseases, and so on, which have become an important treatment of digestive diseases. Since the new century, with the development of artificial intelligence technology and the concept of combining medical and engineering deeply rooted in the hearts of the people, endoscopic techniques have also ushered in new development.