PURPOSE: To recover uranium from seawater, etc., in high efficiency, by using cultured liquid or microbial cell of a specific microbial strain belonging to Bacillus genus and capable of concentrating uranium, adding the cultured liquid, etc., of the strain to a uranium-containing liquid and recovering uranium from the treated product.

CONSTITUTION: A microbial strain capable of concentration uranium and selected from Bacillus sp N-67 (FERM P-9290), Bacillus sp N-257 (FERM P-9291) and Bacillus sp N-270 (FERM P-9292) is inoculated in a proper medium and cultured. The cultured liquid is added to a uranium-containing liquid as it is or microbial cells collected from the culture liquid by centrifugal separation, filtration, etc., are added to a uranium-containing liquid. After the treatment, the cells are collected by centrifugal separation, filtration, etc., to recover uranium.