The success of oocyte maturation is strongly influenced by the rate of expansion of cumulus cells. Cumulus cell expansion is inseparable from cell multiplication through mitotic division which is triggered by several factors, one of which is the growth factor, namely Epidermal Growth Factor (EGF). An increase in the number of cells undergoing mitosis can be used as an indicator of the quality of cumulus cell expansion. The treatments in this study were EGF concentrations of 0 ng/ml, 50 ng/ml, 100 ng/ml, and 200 ng/ml. Observation method with BrdU-PI (Bromodeoxyuridine-Propidium iodide) Flowcytometry. The results showed that the cells that experienced the most mitosis were EGF 200 ng/ml treatments with the amount of 25.79%.