The　recovery　of　precious　metals　is　a　project　with　both　economic　and　environmental　significance.　In　this　paper,　how　to　use　bacterial　mineralization　to　selectively　recover　gold　from　multi-ionic　aqueous　systems　is　presented.　The　Bacillus　licheniformis　FZUL-63,　isolated　from　a　landscape　lake　in　Fuzhou　University,　was　shown　to　selectively　mineralize　and　precipitate　gold　from　coexisting　ions　in　aqueous　solution.　The　removal　of　Au(III)　almost　happened　in　the　first　hour.　Scanning　electron　microscope　with　X-ray　energy　dispersive　spectroscopy　(SEM/EDS-mapping)　results　and　fourier　transform　infrared　spectroscopy　(FTIR)　data　show　that　the　amino,　carboxyl,　and　phosphate　groups　on　the　surface　of　the　bacteria　are　related　to　the　adsorption　of　gold　ions.　X-ray　photoelectron　spectroscopy　(XPS)　results　implied　that　Au(III)　ions　were　reduced　to　those　that　were　monovalent,　and　the　Au(I)　was　then　adsorbed　on　the　bacterial　surface　at　the　beginning　stage　(in　the　first　hour).　X-ray　diffraction　(XRD)　results　showed　that　the　gold　biomineralization　began　about　10　h　after　the　interaction　between　Au(III)　ions　and　bacteria.　Au(III)　mineralization　has　rarely　been　influenced　by　other　co-existing　metal　ions.　Transmission　electron　microscope　(TEM)　analysis　shows　that　the　gold　nanoparticles　have　a　polyhedral　structure　with　a　particle　size　of　~20　nm.　The　Bacillus　licheniformis　FZUL-63　could　selectively　mineralize　and　recover　478　mg/g　(dry　biomass)　gold　from　aqua　regia-based　metal　wastewater　through　four　cycles.　This　could　be　of　great　potential　in　practical　applications.　©　2019　by　the　authors.