Scientific preparation for pregnancy both men and women need to go to the pre-pregnancy examination, at the same time in the daily need for scientific diet, pay attention to rest, quit smoking and drinking, moderate exercise, to ensure that physical and mental health, at the same time in the sex life can pay attention to the way and method. 1. pre-pregnancy examination: generally in preparation for pregnancy, need to go to do pre-pregnancy examination, to check their own whether there is about the reproductive aspects of the disease and their own eugenics five infections, to rule out the unfavorable factors. 2. Pay attention to the daily routine: in preparation for pregnancy, you need to diversify the intake of food to comprehensively replenish nutrients, while both men and women in preparation for pregnancy also need to supplement folic acid to prevent fetal neural tube defects and other birth defects. At the same time, you need to quit smoking and drinking to avoid its effect on sperm and eggs, moderate exercise, improve cardiorespiratory capacity, increase the quality of sperm and eggs, maintain a happy body and mind, avoid stress. 3. Sexual life ways and means: in preparation for pregnancy, sexual life can choose in the female after menstruation on the 14th day, that is, before and after the day of ovulation to increase the chances of conception, but also in the hips after sex on the pillow, increase the sperm and egg contact time, through these methods to increase the chances of conception.