Asalt-tolerant manganese-oxidizing bacterial strain YJT-1, which is a Halobacillus sp. strain, and has been deposited in China General Microbiological Culture Collection Center (CGMCC) on March 7, 2025 with an accession number of CGMCC No. 33748. This Halobacillus sp. strain possesses excellent manganese-oxidizing capability and salinity tolerance, and can effectively induce the formation of biogenic manganese oxide to achieve the degradation of BaP and other polycyclic aromatic hydrocarbons. This application also provides an application of the Halobacillus sp. strain in the remediation of organic pollution in high-salinity water bodies or soil.