Abstract: Based on the analysis of four samples of ore collected from Wengquangou boron deposit in Liaoning Province, it is concluded that the ore is composed of mainly szaibelyite and ludwigite. In the phase analysis, boron in ludwigite is detected by wet magnetic separation and acid digestion. The remnant digested in acid is used to determine boron in szaibelyite. The result shows that the component tested by this method is in accordance with the ore-forming geological composition. The phase analysis for boron ores and boron minerals in nature is rapid and accurate. It provides a new approach to the study and test of boron ores.