Abstract:As a new medical concept, super minimally invasive surgery (SMIS) can cure diseases on the basis of preserving the integrity of organ structure and function. It is the development goal of future therapeutics and has been widely used in the field of digestive endoscopy. The improvement of the understanding of the development of diseases is the prerequisite for the implementation of SMIS. As an examination method compatible with the functions of endoscopy and ultrasound exploration, endoscopic ultrasonography (EUS) can localize and qualitatively diagnose gastrointestinal lesions, especially the analysis of early lesions, which provides a basis for further accurate treatment. In this paper, the value of EUS in the preoperative diagnosis of SMIS on digestive tract diseases was analyzed in depth, hoping to provide help for endoscopic treatment in the future.