Pregnancy and childbirth is an innate physiological process of human beings, and everyone has the right to reproduce offspring, but currently there are more and more infertility patients worldwide, and many people have lost the right and opportunity to be parents. 1. Raw materials, commonly known as “seeds”: sperm and eggs. Sperm is provided by the male partner and is the male reproductive cell, which is produced by the male testicles, stored in the epididymis and seminal vesicles, and discharged through the vas deferens. Eggs are provided by the female partner and are the reproductive cells of the female are, produced by the ovaries. Normal male semen and normal female ovulation are the most basic conditions for conception. 2. The road where the sperm and egg meet, commonly known as the “magpie bridge”, is the woman’s fallopian tube, where the sperm and egg meet in the fallopian tube for fertilization. During intercourse near ovulation, the semen is discharged into the vagina and the active sperm passes through the cervix, uterine cavity and reaches the fallopian tube, waiting for the egg to meet the ovum. The egg is discharged from the ovary into the abdominal cavity and is picked up by the umbilical end of the fallopian tube, where it meets the sperm and is fertilized and united to form a fertilized egg. The fallopian tubes must be open and functioning properly. The fallopian tubes have a retroperistaltic function, and under the joint action of the cilia cells in the inner wall of the fallopian tubes, the fertilized egg is sent back to the uterine cavity to develop into an early embryo. 3. The first set of housing in life, i.e. the uterus. The fertilized egg needs to be planted in the endometrium, which is commonly known as the “soil”. Only with a good endometrium, the embryo can be laid and grow strong. If there is inflammation or damage to the endometrium, the embryo cannot be planted, that is, it cannot get pregnant. Repeated scraping and abortion may damage the endometrium. Therefore, a good intrauterine environment is also one of the important conditions. In conclusion, a normal conception requires a sufficient number of viable sperm in the male; normal ovulation in the female, the ability of the fallopian tubes to pick up eggs and be open, and a good uterine environment; any problem in any of these parts may cause infertility.