TheNetwork RTK is a kind of mobile positioning measurement technology based on the continuous operation of reference station network system.All the cities in our country have established or are in the process of establishing the network, which has been widely used in the engineering survey.In order to play the role of network RTK in practical measurement better and solve the issues in application, this paper lists several advantages, and elaborates the working principle and the system composition framework of the network RTK.After combining practical working experience, this paper analyzes the several situations and finds out the possible reasons from the aspects of continuous operation parameters, test station, data communication, control center and user part. Finally, the corresponding control measures are put forward.