The universal slope radar is a fully solid-state slope stability monitoring radar system based on the continuous wave radar system. It achieves high-resolution imaging and sub-millimeter-level deformation measurement accuracy through multi-transmission and multi-harvesting imaging and differential interferometry. It can conduct large-angle, non-contact, and high-precision monitoring of the minute deformations of the monitored slope body. It features long distance, ultra-high data update rate, no influence from weather and lighting conditions, high portability, simple operation and intelligent early warning.