In this study, we observed the microstructure of digestive organs of Paramesotriton caudopunctatus by using histological methods. The results show that the esophagus of P.caudopunctatus is short; the tissue structure of stomach and intestine is divided into the mucosa, submucosa, muscularis and adventitia; submucosa is lost in the preceding section of small intestine. Gastric mucosal layer contains many gastric adenocarcinoma, and gastric adenocarcinoma cell cytoplasm contains eosinophilic granules. The slender villi in the preceding segment of the small intestine are intensive; the slender villi in the middle and posterior segments of the small intestine gradually become short and sparse; the midgut gland in the lamina propria of mucous layer is absent. The boundaryies of parenchymal liver lobule is not obvious, and numerous pigment particles distribute within the hepatic lobule.