Three years of regular sexual intercourse without contraception and yet no pregnancy, this can already be diagnosed as a range of infertility. Both husband and wife need to do the relevant examination, in which the female infertility factors include fallopian tube factors, ovulation factors, uterine factors and unknown causes of infertility. First, tubal factors account for about 35% of infertility, it is recommended that patients go for tubal imaging examination 3-7 days after menstruation to find out whether the tubes are impassable or obstructed, etc. Second, ovulation factors require patients to take blood to check the hormone level on the 2nd-5th day of menstruation to find out the hormone level. Need to go to the hospital on the 12th day of menstruation to do ultrasound to monitor the situation of ovulation; third, the uterine factors, most of the main consideration is the existence of congenital developmental abnormalities, as well as previous abortion-induced uterine cavity adhesions. This is mainly through the ultrasound examination can understand; fourth, the unknown immune factors, this need to rule out the previous three factors, and then do the relevant blood test can understand. The male partner’s examination is mainly to go to the male department to check the sperm condition.