[en] Uranium (VI) biomineralization by soluble ortho-phosphate from decomposition by aspergillus niger of the phosphate rock powder, a cheap and readily available material, was studied in detail. The aspergillus niger, which was isolated from the uranium mine tailings mud, was used for dissolving the phosphate rock powder. The results show that aspergillus niger is effective in solubilizing P from the phosphate rock powder, and the concentration of the dissolved phosphate reached 242.32 mg/L after 22 days. 95.36% of uranium in solution could be removed by uranium biomineralization, and the concentration of uranium in solutions decreased from 50.00 mg/L to 2.32 mg/L. The phosphorus concentration is positively correlated with the uranium concentration (R² = 0.92). The precipitate generated in the mineralization experiment was analyzed by EDS, and the peaks of uranium are found in the EDS images indicate that the U-P mineral is formed. (authors)