Chiglitazar/Metformin in Non-obese Women With PCOS

Inclusion Criteria: 1. Female aged 18- 45 years old 2. Normal weight BMI 18.5--24 3. Diagnosis of hyperandrogenism T\>0.481ng/ml 4. The diagnosis of PCOS is based on the diagnostic criteria established by the Rotterdam consensus 5. No use of drugs affecting reproductive endocrine in the 3 months prior to the clinic visit Exclusion Criteria: 1. T level is within the normal range 2. Organ dysfunction 3. Drugs that can affect endocrine such as contraceptives and steroids taken in the past 3 months 4. Confirmed diagnosis of diabetes 5. Are on a diet, use weight-affecting medications, or have experienced a weight change of \>4.5kg within 3 months prior to the start of the study 6. Have other endocrine disorders, such as thyroid dysfunction, adrenal gland disease, hyperprolactinemia, etc. 7. Combined psychiatric disorders and severe primary diseases 8. Allergy to the drug or components of this study 9. Those who do not follow the doctor's instructions during the medication, or discontinue the treatment due to serious adverse reactions