Abstract: In order to realize a digital mine construction and improve the efficiency and accuracy of mine survey, the paper studied the design of the CORS system for a single reference station, the location selection of the reference station, the establishment of the each sub-system and other contents in Yuzhou Mining Area.A mat hematic model with plane datum conversion and height datum conversion of the CORS system in the mining area was provided.The D grade GPS control network meth od was applied to the linked measurement of the public points and to the accurate measurement of the existing partial control points in the mining area, the measured「 esults showed the operation of the YZ-CORS system was stable. The accuracy of the datum conversion model was reliable and could provide the accurate and reliable GPS difference signals within a radius 15 km scope.The plane accuracy was within 0.050 m and the height accuracy was within 0.081 m. .