In order to track the development and application of foreign high energy laser weapon,foreign patent searches in the United States,Germany,the United Kingdom,Israel and other countries are carried out within the scope of the global patent database,and 435 related patents published after 2017 are obtained.Based on the analysis of the composition of the patented technology,it is understood that foreign countries have made breakthroughs in the combat distance,maneuvering target tracking and continuous combat capabilities of high energy laser weapons.What′s more,from the analysis of the regional distribution of patents,it is found that the technological innovations in the United States accounts for 61% of total foreign applications and 54.7% of patents are funded by the government.Moreover,for foreign important projects or government funded patents,program profiling is conducted and the technical improvement direction of nuclear submarine laser weapons and dazzling laser weapons are deeply excavated.Additionally,through the tracking and analysis of foreign laser weapons patents,the direction of foreign technology development is found,providing information support for China′s technological development and risk defense.