Introducing Web Services communication technology to distribution automation can help to reduce the difficulty of the protective device to access the distribution network automation system. Based on IEC 61850 and Web Services, a high performance digital protective device for distribution system with neutral grounding via low resistance is researched and developed. The principle and application of neutral grounding via low resistance technology in distribution network are analyzed, and the functions of neutral grounding via low resistance protective device are decomposed. Then IEC 61850 information model is built. The server of Web Services is developed with gSOAP, and the client of Web Services is developed on Windows platform. Finally, as a test case, GetDataValue service is used to call measured value of a neutral grounding via low resistance protective device, verifying the feasibility.