In the case of relatively low semen volume, as long as the sperm can move quickly and can liquefy within the specified time, it does not affect pregnancy clinically. Therefore, it is suggested that it is better to arrange sex reasonably at the time of ovulation in this case, so that there will be a chance of pregnancy. It is recommended that men should wear less tight jeans in daily life to ensure blood circulation in the pelvic cavity and avoid high temperature of the testicles which may reduce the amount of sperm. It is not allowed to drink alcohol during the preparation of pregnancy. If you smoke and drink excessively, the quality of semen may also be reduced, so this should be paid special attention. It is recommended that women during the preparation for pregnancy, especially during ovulation must arrange reasonable intercourse time, if it is irregular menstruation, you can monitor ovulation through ultrasound, when the follicle reaches advantage can choose to have intercourse, you can improve the chances of pregnancy.