Abstract: Benzoapyrene (BaP) is a typical pollutant of polycyclic aromatic hydrocarbons (PAHs), which is of concern due to its environmental persistence, lipid solubility and bioaccumulation. BaP metabolism produces benzoapyrene diol epoxide (BPDE), which forms DNA adducts, disrupts endocrine function, induces oxidative stress, and alters DNA methylation patterns, among other effects. These disturbances at the molecular level cause multidimensional damage to the male reproductive system, including structural damage and even apoptosis of spermatogenic cells, impaired testosterone synthesis, aberrant expression of genes involved in steroid synthesis, and decreased sperm quality, ultimately significantly elevating the risk of male infertility. This review summarizes recent advances in the reproductive toxicity of BaP and its molecular mechanisms, identifying potential targets for intervention.