The main reasons for not being able to conceive a child more than 1 year after marriage are the following: 1. For the male partner, it may be a problem with sexual function, not being able to have normal intercourse and vaginal ejaculation during ovulation, or a problem with sperm, such as common sperm, weak sperm, azoosperm, or a decrease in sperm quality caused by disease, varicocele, epididymitis, etc. 2. Life factors can also The problem of sperm quality of the male partner, such as smoking, drinking, staying up late, and the increased rate of DNA fragmentation of sperm, can also cause difficulties in pregnancy. 3, some of the more common factors in women are tubal factors, such as blocked fallopian tubes, sperm and eggs can not meet, can not be fertilized and can not get pregnant. 4, uterine problems, such as the uterus has endometrial polyps, uterine fibroids protruding into the uterine cavity to occupy the position of the uterine cavity, it is also difficult to have room for embryonic growth. The most common ones are polycystic ovary syndrome, where women can’t have eggs during normal ovulation, so they can’t get pregnant. 6. mental factors such as tension and anxiety are also causes of pregnancy difficulties.