The process of ovulation is to increase the amount of estradiol secreted by the mature follicle before ovulation, which will play a positive feedback regulation of the hypothalamus, prompting the pituitary gonadotropin-releasing hormone to discharge a large amount of luteinizing hormone secretion to reach the peak, thus enabling the egg to be excreted from the follicle to achieve the purpose of ovulation. When a woman’s body hormone level is low, the follicle will not be able to develop and mature, which will also lead to the mature egg can not be discharged in a timely manner resulting in ovarian anovulation. When ovulation does not occur, the ovaries are not able to combine with sperm to form a fertilized egg, and a woman is unable to conceive. If a woman wants to become pregnant, her ovaries must have normal reproductive and endocrine function, and be able to release a high quality egg during ovulation, which will wait in the fallopian tube to combine with sperm to develop into a fertilized egg.