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Objective To explore the effects of subchronic exposure to dibutyl phthalate (DBP) and benzo [a] pyrene (BaP) on male rats fertility.Methods A total of 48 male Sprague-Dawley rats were equally randomized into 4 groups and respectively received by corn oil, 5mg/kg/d of BaP, 250mg/kg/d of DBP, 5mg/kg/d of BaP +250mg/kg/d of DBP for 90 days.