As an ERCP visualization system with microscopic imaging capabilities, the product integrates biliary sub-endoscopy and biliary confocal endomicroscopy to provide an overall solution for biliary and pancreatic diseases, effectively improving the diagnostic efficiency of ERCP. At the same time, it is equipped with an ultra-micro biliary probe (probe diameter <1.0mm) with a resolving ability of μm, which can observe the lesion site on cell-level images under the premise of direct vision of the biliary tract, and judge the nature of the lesion immediately at the same time, so as to realize the effective identification of precancerous lesions of cholangiocarcinoma.