In order to meet the double requirements which are the largescalein measurement range and highprecision in local detail in the manufacturing and assembly process of marine engineering,a method to construct the global control network and optimize the transfer station is presented in this paper.Based on the research on the rules of the measurement process of laser tracker, the mathematical model of measurement process is established, and the uncertainty of single point measurementis predicted according to the result.The experiments show that the actual measurement and simulation data are in good agreement. Therefore, the point measured by the tracker different weight distribution is given, andwhich is integrated into the SVD decomposition method,then the parameters of transfer station can be obtained. And compared with the ordinary SVD in RMS, the SVD method with the weight has a statistically significant optimization.Transfer station parameter is used to analyze the transfer station accuracy.The measurement errors existed in bothtwo stations are considered with TLS (total least squares),the affecting factors of precision are figured out, it laysthe foundation for the followup study to improve the precision of the transfer station.