Clinically, based on the patient’s medical history, clinical manifestations and physical signs, if the patient is suspected of having polycystic ovary syndrome, a series of auxiliary examinations will be conducted to help clarify the diagnosis and except other diagnoses. Ultrasonography, sonogram shows that the uterus is smaller than normal, the bilateral ovaries are uniformly enlarged, the peripheral echogenicity is enhanced, the contour is relatively smooth, the internal echogenicity is uneven, and a number of non-echoic areas of varying sizes can be seen encircling the edges of the ovaries; hormone measurements, the value of serum FSH is low and the value of LH is high, the concentration of serum androgen is elevated, and the measurement of estrogen is normal or slightly elevated, and the fasting blood glucose and oral glucose tolerance should be measured in the case of patients who have a combination of obesity. For patients with obesity, fasting blood glucose and oral glucose tolerance test, fasting insulin level and the highest concentration of serum insulin after glucose loading; in addition, basal body temperature is monophasic, and there is no increase in temperature in the second half of the menstrual cycle, which suggests that there is no ovulation; through direct observation of the laparoscope, it can be seen that the ovary is enlarged, with thickening of the peritoneum and smooth surface, and there are multiple follicles under the peritoneum without any ovulation, and it is also possible to laparoscopically take the ovary and send it to the pathology for examination, and this examination is less frequently used at present. At present, this examination is less frequently used. Polycystic ovary syndrome is a complex disease with diverse clinical manifestations, so doctors usually need to do relevant laboratory tests to make a clear diagnosis.