Abstract: Rare metal minerals such as lithium and beryllium are important strategic mineral resources. In recent years, several rare metal pegmatite-type deposits have been discovered in Altyn area, which have emerged as a new rare metal metallogenic belt, but with relatively low investigation and research level. Through the discussion of the metallogenic dynamic background of the Altyn orogenic belt, the authors concluded that the rare metal metallogenesis in the Altyn orogenic belt covered many different tectonic evolution stages of the orogenic movement, indicating good metallogenic conditions for rare metals and great prospecting potential. The southern Waishixia lithium-beryllium rare metal deposit located in the western Altyn Tagh has a large prospect, based on the exploration and evaluation of this deposit. The lithium-beryllium rare metal ore body in the southern Washixia mainly occurs in the pegmatite veins of greenschist facies and amphibolite facies metamorphic rock series, and the deposit type is granite-pegmatite type rare metal deposit. According to the existing exploration results, the inferred rare metal resources of this deposit have reached the scale of medium and above, and there is still a great space for increasing storage in the deep and peripheral areas with the progress of exploration. The research results are of great reference significance to the deposit search of similar types in the Altyn orogenic belt.