Checking for follicles is not the same as checking for blocked fallopian tubes, which are two different diseases and different methods of examination. The presence of follicles and good follicular development in ultrasound examination only indicate normal ovulation function, but the fallopian tubes cannot be judged by the presence of follicles, and a tubal lavage or tubal imaging should be done 3-7 days after menstruation to check whether the tubes are open. The causes of tubal blockage are commonly adnexal inflammation or pelvic inflammatory disease, which can easily lead to tubal inaccessibility, and follicular dysplasia, which is mostly caused by endocrine disorders, such as low estrogen content or polycystic ovary syndrome, hyperprolactinemia and other causes of follicular dysplasia ovulation disorders, factors that affect pregnancy include ovulatory dysfunction and also poor tubal function.