Each person’s ability to get pregnant is the ovarian reserve capacity, there are the following points can be predicted: 1, age: > 35 years old ovarian reserve capacity declines significantly, but there are individual differences, some people > 40 years old will still be easy to get pregnant; 2, menstrual cycle: regular shortening of the menstrual cycle tends to indicate a decline in the reserve capacity; cycle < 25 days or > 35 days of conception ability to decline; 3, ovarian disease and surgical history such as Ovarian cyst removal surgery on the destruction of ovarian function; 4, sinus follicle count: ultrasound examination on the third day of menstruation, the whole ovary count ≤ 5 or the most sections ≤ 3 suggests a decline in reserve; 5, basal FSH level: generally ≥ 15U / L, the significance of the larger; > 40U / L is menopausal; 6, the basal E2 level: the third day of menstruation, E2> 80pg / ml, regardless of the age and the level of FSH, the fertility decline has been clear. It is already clear that their fertility has declined.