Abstract: In the area of Longnan, Gansu province, slope engineering safety issues have become increasingly prominent, and it is necessary to monitor and warn the slope works. A comprehensive three-dimensional automatic slope monitoring system was established, based on a high slope reinforcement works instance of Zhouqu reconstruction project after a disaster. Through monitoring and analyzing on the slope of stress and displacement, we found the slope’s changes in the characteristics and laws during the construction and operational phases. During the initial phrase, the slope support, stress, and displacement amplitude are greater. With the mutual adjustment of internal support structure and rock slope, both changes were stabilized. Since the end of the slope support, maximum displacement speed is 0.24mm/d,﹤0.5mm/d, and maximum displacement accumulated variation is less than 10mm. Maximum acceleration is 0.31mm/d²; the force and deformation of lattice beams are in the elastic range; the slope changes of internal horizontal displacement are small. Integrated the monitoring results, it can be drawn that an anchor lattice beam can play an effective reinforcement role, and that during the operational phase, this slope is in a stable state. The test has certain reference value for the reinforcement design and monitoring analysis of similar slopes in the future.