The normal development of follicles but not pregnant may be caused by other reasons, it is recommended to carry out other aspects of the examination. Infertility occurs due to many reasons, there are male factors and female factors, the man has poor semen quality or azoospermia, even if the woman is normal, there will be infertility; the woman’s fallopian tubes are not clear or not passable, follicle development is normal will also be infertile, so we need to carry out a tubal examination. Women can have a test such as tubal insertion and fluids or tubal imaging 3-7 days after menstruation to find out the patency of the tubes. The man can have a routine semen test after abstaining from sexual intercourse for 5-7 days to know the quality of sperm and whether the infertility is caused by poor sperm quality.