Having intercourse every other day during ovulation is better than having intercourse every day because the male sperm can survive in the woman’s body for 72 hours, so having intercourse every other day can ensure that there is sperm alive during the whole ovulation period, and as long as the patient ovulates during this period, she will not miss the time of conception. In addition, having intercourse every other day can make the patient’s semen relatively thicker, so it can increase the woman’s chances of conception. However, ovulation does not only occur during ovulation, but may also occur during the safe period due to ovulation disorders. Therefore, it is recommended that the patient use ultrasound to monitor ovulation and then guide intercourse to maximize the woman’s chances of conception. When the ultrasound indicates that the patient’s follicle has developed to 1.80cm, which is a mature follicle, she can choose to have intercourse, once every other day, for 2-3 times in a row, so that she will not miss the ovulation time.