Objective: To prove the effect of administered orally lead acetate exposure on Bax expression and the apoptosis index of granulosa cells on antral follicle female albino rats Wistar strain (Rattus norvegicus).Methods: Post-test only control group, using female albino rats Wistar strain aged 10-12 wk (reproductive age) weighing 100-200 g. Twenty-four animal samples were classified into one control group and three groups exposed to lead acetate in doses of 30, 100, and 300 ppm, respectively. Lead acetate was administered orally through a feeding tube over 30 d. Bax expression of granulosa cells on antral follicle was checked using immunohistochemistry, and apoptosis index were examined using Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL).Results: Lead increases apoptosis index on doses of 300 ppm. The increase of the Bax expression granulosa cell on antral follicle was not statistically significant.Conclusion: The exposure of lead acetate administrated orally can increase apoptosis index of granulosa cell on antral follicle although it doesn’t affect Bax expression.