Abstract: This paper introduces the high-precision data processing software as well as precise data processing method.Based on the Jiangsu Continuously Operational Reference Station network(JSCORS for short),we discuss the feasibility of sub-network division strategy through numerical calculation,and present the principle suitable to large scale GNSS reference station network data processing.By comparative analysis with integration adjustment,we make some useful suggestion on the method of sub-network division in large scale GNSS reference station network application.