Patients with polycystic syndrome have ovulation and should be able to conceive a child, the reasons for not being able to conceive are as follows: First, when polycystic syndrome is present, the patient’s ovulation performance is mainly the regularity of the menstrual cycle, 28-30 days for a period, seven days from the beginning to the end, then it is a regular menstrual cycle. Secondly, ultrasound monitoring of egg size, normal ovulation should be 18-20 mm. Thirdly, in polycystic syndrome, multiple follicles are developing and estrogen levels are sufficient, but progesterone levels after ovulation are insufficient to sustain pregnancy. Whether ovulation occurs in patients with polycystic syndrome, whether the progesterone level after ovulation can or cannot, and whether the endometrial thickness is sufficient, can affect the outcome of the pregnancy. Sometimes a patient with polycystic syndrome ovulates and becomes pregnant, but the progesterone level is insufficient and the endometrium is thin, resulting in a biochemical pregnancy, where a sperm-egg union occurs but does not implant in the endometrium.