The paper, combining the requirements of layout optimization and stability of large-size measuring equipment during precision measurement of large-scale precision systems ,expounds the structure principle and realization method of stable lifting of large-scale precision measuring platform. Finally, with the help of the omni-directional transfer platform and the carbon fiber synchronous lifting system, the stable support and automatic walking of the large-size measuring device at high altitude are realized. The experimental data show that the stability of the platform is better than that of the theodolite.