Before pregnancy need to be prepared as follows: a. Active treatment of gynecological diseases, if before pregnancy women menstrual disorders, cycle changes or other gynecological diseases can not be ignored, must pay attention to the active treatment of these diseases to ensure a smooth pregnancy, so as not to cause miscarriage, or even premature birth. Second, actively carry out eugenics examination, you can go to the hospital to check blood pressure, blood sugar, liver function, kidney function, blood, this examination is best for both husband and wife to do, the male can carry out sperm examination, so as to ensure the future birth of a healthy baby. Third, actively adjust the mood and mentality, to ensure adequate sleep nutrition, quit smoking and alcohol, exercise. Four, supplement folic acid, not only women should supplement, men should also supplement folic acid, because folic acid in the first three months of pregnancy supplement can effectively prevent the baby in the future occurrence of neural tube abnormalities. Fifth, supplement vitamins and calcium, eat more fresh fruits and vegetables, for calcium deficiency in both men and women should be properly supplemented with calcium, especially women, to ensure that after pregnancy is not calcium deficiency.