The menstrual cycle is the Cyclical shedding of uterine endometrium due to a decline in estrogen and progesterone production caused by a regressing produces high levels of estrogen and progesterone. The four main phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase. In this study, we analyze a mathematical model of the population of the human menstrual cycle. Comparison of the parameters that affect the limit cycle.