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Objective: Global navigation satellite system (GNSS) Continuous Operating Reference Station (CORS) System can maintain a accurate, 3D, geocentric and dynamic reference coordinate frame in the corresponding area, can provide positioning and navigation service. It can also serve for the meteorology, geodynamics, earthquake monitoring and Location Based services (LBS) etc in the same area. Until now, our country can’t provide a facing National CORS System serving for every profession and trade, and the national sharing platform of CORS System resources has not been established. So this paper discusses some valuable insight how to construct the National CORS System in China. Method: Constructing goal、Service object、CORS distribution、CORS geographic、geology and communication environment and other factors, are major considerations for the Constructing the National CORS System. Moreover, constructing GNSS CORS is more specific, mainly from four aspects, namely site-selection、civil construction、security measures and equipment-selection for consideration. Outcome: The project of the Constructing Global navigation satellite system (GNSS) Continuous Operating Reference Station (CORS) System in china is put forward, and is discussed from goal、principle、project and other for construction. Some meaning thought how to construct the National CORS System is submitted Conclusion: The Global navigation satellite system (GNSS) Continuous Operating Reference Station (CORS) System in china is the lack of a unified planning and design in the national level. So far, the national CORS system serving all walks of life has not been provided, and the national sharing platform of CORS System resources has not been established The primary mission of the Global navigation satellite system (GNSS) Continuous Operating Reference Station (CORS) System in china is as follows: using data set of GNSS and receiving, transport, process, integration, transmit information and the corresponding services, providing real-time dynamic space location service up to sub-meter to meter level, providing high precision、three dimensional signal point coordinate using post-precision positing technology up to centimeter to millimetre level, these will help ensure maintain the unified、high precision and up to date of the three dimensional geocentric coordinate frame serving for the entire land and sea of our country. The National CORS system of china by combining with information of《 international GNSS services(IGS) 》, can provide satellite orbital data、clock data、coordinate and its movement speed of international and home CORS, troposphere and ionosphere information and parameters of antenna phase center stations over CORS sites, etc. Based on customer’s requirement, the National CORS system of china can also provide remote data processing custom service、RTK and precise point positioning service, etc; and provide weather forecast、wireless communication obstacle forecast、earthquake monitoring and other up to date information services. Open data services platform is provided from the National CORS system of china, and will widely service in all walks of life, and will also service for economy, national defense and society development in our country.