In order to achieve global orientation and accuracy control in large space geometric measurement, precise three-dimensional coordinate control field need to be established. Using a laser tracker to establish coordinate control field by single station is the most effective means recently. But in face of higher accuracy in local area, coordinate transform error between stations must be reduced in the process of global orientation, and accuracy of control field in the region must be enhanced. By using high accuracy ranging interference of laser tracker, multiple spatial length standards are constructed with carbon fiber rods and target ball seats, and arranged flexibly in the desired region in the space. In the process of using a laser tracker to make redundant measurement of control points by multi-station, length standards are added as constraints to overcome space occlusion and optimize tracker angle measurement error, further improve the coordinate accuracy of control points used to construct length standard, thus enhance the local field measurement accuracy. The experimental results show that accuracy of global orientation is better than 0.04 mm in the range of 10 m with this method, which meets high accuracy requirement of large space geometric measurement.