We developed a model to simulate polycyclic aromatic hydrocarbons (PAHs) from global to regional scales. The model can reproduce PAH distribution well. The concentration of BaP (indicator species for PAHs) could exceed the target values of 1 ng m^-3 over some areas (e.g., in central Europe, India, and eastern China). The change in BaP is lower than that in PM_2.5 from 2013 to 2018. China still faces significant potential health risks posed by BaP although the Action Plan has been implemented.