Abstract: Euprepiophis perlacea (Stejneger,1929) is a relatively rare non-venomous snake speices.After this species was found in 1929,very few information about it was reported,letting alone a clear description of it.Based on the field survey and specimen examination,this study showed some differences between the adults and babies of this snake speices.It was also found that their food was pinky mice by dissection.In combination with other recent reports of this snake speies in Sichuan and a new record discovered in Shannxi Province,an additional description was given of the morphological characters and geographic distribution of this species.