There are many factors affecting pregnancy, such as multiple abortions leading to infertility, physical decline or gynecological inflammation, such as tubal blockage, pelvic inflammatory disease, irregular life, often stay up late, psychological quality is not good, excessive obesity or severe uterine cold. Both parties need to go to the hospital, do pre-pregnancy examination, in favor of eugenics. Women need to have a mature egg to be discharged, the man in the same room, there is a sufficient number of morphology or vitality of the sperm, the woman’s fallopian tubes are not blocked, the sperm and the egg can meet and fertilization, the fertilized egg can enter the uterus through the fallopian tubes and can be planted in the endometrium above the conception can be successful.