When a woman enters her reproductive years, there is usually one dominant follicle per month that develops to full maturity and releases an egg. After the egg is discharged, the umbrella of the fallopian tube will “pick up” the egg into the fallopian tube, and transport the egg to the juxtapical part of the fallopian tube, where the sperm and egg meet. The sperm enters the female vagina through ejaculation and travels by flagellum to the cervix and uterine cavity, eventually reaching the fallopian tube where it combines with the egg to form a fertilized egg. The fertilized egg enters the uterine cavity from the peritoneum of the fallopian tube and gradually splits into multiple cells as it moves toward the uterine cavity, forming a blastocyst and planting it in the uterine cavity to develop into an embryo, which then slowly grows into a fetus, which is the approximate process of the sperm-egg union. Whether a woman produces an ovulation disorder or the transportation process is blocked, the sperm and egg are not able to combine effectively, thus affecting pregnancy. Various causes of ovulation disorders can affect pregnancy and require seeking medical help. Causes of ovulation disorders include hypothalamic and pituitary pathology, polycystic ovary syndrome, abnormal thyroid function, hyperprolactinemia, and follicular luteinization without rupture syndrome. There are certain ways to know whether ovulation is occurring. Basal body temperature measurement, changes in the quality of cervical mucus, histologic examination of the endometrium, changes in reproductive hormones, and ultrasound detection of follicles can all be used to predict whether ovulation is occurring. Currently, hormone measurement and ultrasound are most commonly used to monitor ovulation at home and abroad. The most valuable hormone for ovulation is luteinizing hormone (LH), which fluctuates at a very low level in the early stage and has a peak secretion before ovulation, making it the hormone that changes most significantly before ovulation. Therefore, continuous measurement of blood LH or urine LH 1 week before menstruation can roughly predict ovulation. Continuous observation of the ovaries by ultrasound can determine follicular development by follicle size and clarify the cause of the patient’s failure to ovulate. In addition, it can also predict the patient’s response to ovulation induction, which can guide the adjustment of ovulation induction program. In conclusion, the impact of ovulation disorders on pregnancy is certain, and if there are related problems, it is necessary to consult a doctor for professional guidance as soon as possible.