Pregnancy is a very complex physiological process, want to improve the chances of pregnancy, need to both men and women at the same time actively prepare for pregnancy, do a good job of pre-pregnancy preparations, such as continued for 1 year is still not pregnant, the two sides can be jointly examined whether there are other pathologic reasons. 1, pre-pregnancy eugenics examination: men and women do a good job of pre-pregnancy eugenics examination, if the examination of the process of the discovery of diseases that are not conducive to pregnancy, should be prevented as early as possible and treated in a timely manner. 2, to improve the life lifestyle: during the preparation for pregnancy should develop good living and eating habits, reasonable arrangement of work and rest time, avoid staying up late, tired, etc.; eat a light diet, eat more fresh vegetables and fruits, do not eat too greasy and spicy food, quit smoking, quit drinking; 3, planning for the coital cycle: calculating a good physiological cycle, a clear ovulation, if menstruation is regular, the next menstruation before the 14th day of the day of ovulation, the day before the ovulation of the first five and the next four days for ovulation, in the ovulation period, the first five and the second four days of the day of ovulation, the next day of ovulation, the second day of ovulation, the second day of the day of ovulation. If the next menstrual period is regular, the 14th day before the next menstrual period is the day of ovulation, 5 days before and 4 days after the day of ovulation is the period of ovulation. However, the number of coitus should not be too frequent, otherwise it will reduce the quality of sperm; 4, adjust the psychological state: both men and women should relax, maintain a happy mood, avoid too much anxiety. If the mood is too nervous, anxiety will affect ovulation, so that menstrual disorders, not conducive to conception. If according to the above measures to prepare for pregnancy lasted 1 year, still not pregnant, men and women should go to the hospital infertility clinic for further examination.