It is recommended to have intercourse every other day during the ovulation period, not every day. 1. Every day: too high a frequency of intercourse will lead to a decrease in the concentration of male sperm, which will reduce the survival rate of sperm, resulting in a lower rate of fertilization. 2. Every other day: Every other day can ensure that the sperm is thicker and more active. In addition, the male sperm can survive up to 72 hours in the female body, so the next day to have sex will not miss the female ovulation, relatively speaking, can improve the chances of fertilization to a certain extent. However, if you have been preparing for pregnancy for a long time, it is recommended to go to the obstetrics and gynecology department of the hospital, under the guidance of the doctor, through the ultrasound to monitor the ovulation status of the woman, and observe the follicle maturity to be about to ovulate, and then choose to have sex, the chances of conception will be greatly improved.