Based on road design information, we derived coordinates of arbitrary points in the pile and crosssectional azimuth which may guide global positioning system (GPS) surveying in section surveys. Also, we introduced Windows CE technology into the measurement process, using embedded programming for the GPS realtime data process. It emphasizes designing the functional components of GPS data communications, data displays and cross sectional surveys. The software system may be used to produce the liberal station, realtime dynamic display, and indoor and outdoor work processing. This system has been used in the ShanghaiChengdu West Road Item. The results show that the integrated system of indoor and outdoor works for realtime kinematic (RTK) surveying in a mountain highway could simultaneously process indoor surveys and outdoor data.