Before preparing for pregnancy need to do some preparatory work. First of all, both husband and wife need to develop good habits during the preparation for pregnancy, quit smoking and drinking, do not stay up late, and at the same time, appropriate physical exercise to enhance physical fitness. Secondly, before preparing for pregnancy, it is best for both husband and wife to go to the hospital together, to do the relevant examination before pregnancy, including sperm quality, female ultrasound, gynecological examination. In addition, you need to take folic acid, you need to take folic acid during the preparation for pregnancy, folic acid can prevent fetal neural tube malformation, promote the development of the nervous system, it is recommended to take at least 3 months during the preparation for pregnancy, and you need to take it for about 3 months after pregnancy.