The invention discloses an unmanned aerial vehicle autonomous landing guidance system based on solar-blind region ultraviolet imaging. The system comprises an ultraviolet source beacon module, a two-channel imaging module, a data processing module, a data sending module and a data storage module. The ultraviolet source beacon module is arranged on a landing platform; the two-channel imaging module, the data processing module, the data sending module and the data storage module are arranged on an unmanned aerial vehicle; the unmanned aerial vehicle carries out imaging on the ultraviolet source beacon module through the two-channel imaging module; then, the data processing module carries out processing on imaging data; and the data sending module sends a part of processing results of the data processing module to an unmanned aerial vehicle flight control system, and sends the rest processing results to the data storage module for storing. The solar-blind region ultraviolet imaging technology is, for the first time, applied to unmanned aerial vehicle autonomous landing guidance, and unmanned aerial vehicle autonomous landing guidance based on the solar-blind region ultraviolet imaging is realized.