Female infertility is not a single factor on the female side, but also requires consideration of male factors, with specific examinations as follows: 1. routine semen examination: to determine whether male factors are involved; 2. gynecological examination: to clarify whether inflammation exists in the uterus and adnexa; 3. ultrasound examination: to understand the condition of the uterus and ovaries and monitor ovulation; 4. basal body temperature monitoring: to determine whether ovulation exists according to body temperature in one direction and in both directions; 5. cervical mucus examination: to determine whether ovulation exists; 6. 6. Sex hormone examination: to understand ovarian function and exclude endocrine diseases; 7. Tubal patency examination: including tubal lavage and tubal angiography, which can clarify whether the tubes are obstructed; 8. antibodies, antiphospholipid antibodies, thyroid function, etc.