For the combination measurement system consisting of the laser tracker Leica AT901-MR, laser scanner Leica T-Scan5 (T-Scan), and industrial robot KUKA KR90R3100 extra, the rational planning of laser tracker stations to measure the frequently changing T-Scan pose is one of the key problems. To solve this problem, first, the construction of a combination measurement constraint model combining laser tracker and T-Scan measurement characteristics and proposing a station evaluation method to examine station viability is required. To improve the measurement efficiency and reduce the number of stations, the station planning method flow is designed based on the station evaluation method. Finally, implementing the station planning method based on Open CASCADE programming and designing a skin-scanning experiment for verification is required. The results show that the number of laser tracker stations planned by this method is less than that of the empirical method. Besides, the measurement of the skin under the planned station takes about 5 min, whereas, the empirical method takes about 40 min.