[en] It is concluded that Baolongshan uranium deposit belongs to the complex genetic deposit of the superimposed transformation of homologous sediments, after studying the geological characteristics of Baolongshan uranium deposit. The mineral body is mostly plate-like, layered, and the production pattern is consistent with the formation, which is different from the typical inter-layer oxidation zone sandstone type uranium mineral. The mineral symbiosis combination shows that mineralization has many characteristics such as cogeneration deposit, oil and gas reduction superposition, and hydrothermal transformation. The formation of mineral deposits has undergone the initial pre-enrichment of uranium in sedimentary and diagenetic processes, infiltration and oxidation of oxygen-containing uranium water, and hydrothermal superposition and transformation. The mineral deposits are jointly controlled by structures, braided river sand bodies, inter-layer oxidation zones, and hydrothermal transformation. (authors)