If an ultrasound is performed during ovulation, it can reveal the presence of large follicles in the ovaries, which can reach 18-20 mm in diameter, and after ovulation, free fluid will appear in the pelvis. If a woman tests herself on urine during ovulation, the ovulation test paper will appear strongly positive. The leukorrhea appears to be clear, with a relatively large degree of straining and a high volume. In women with ovulation disorders, the above conditions do not appear clinically, such as increased leucorrhea, greater lacrimation, or no strong positive ovulation test; and there is no sign of follicle development or ovulation on ultrasound monitoring; when cervical mucus is examined, the typical lamb’s tooth plant-like crystals are not seen on smear; when endometrial biopsy is performed during curettage, the secretory endometrium is not seen. At the time of laparoscopy, no ovulatory hole was seen on the ovarian surface. All of these findings suggest a possible ovulatory disorder.