Abstract: When the sections of a project are not in the through going shaft, the project's rotational angle is complicated. Axes controlling method for line setting need to move station many times and measuring error will accumulate rapidly. Polar coordinates method is more convenient. Outer controlling method is used for upright control under 0.000 and inner controlling method for above 0.000, thus the axes are controlled effectively. Elevations pass layer-by-layer, outer direction joint measuring can control the building rotation. The combination of different measuring methods can make good effect during tall building measuring. And the implementing method for settlement observation is also expounded.