Avoiding pregnancy can be avoided by taking short-acting contraceptives, long-acting contraceptives or emergency contraceptives, but there is no way to prevent pregnancy through dietary therapy in general. Short-acting contraceptive pills, such as Ursine or Ursine, or Daing-35, can be taken orally between the 2nd or 5th day of menstruation, and the pill can be taken orally for 21 days at regular intervals every day, and will be 99% effective after the 7th day of oral intake, although menstruation will occur after 21 days of oral intake. The emergency contraceptive pill is suitable for intercourse without measures, and can be taken orally within 72 hours after intercourse, with an accurate contraceptive effect of about 80%. The emergency contraceptive pill can only be taken once a month, and it is forbidden to take it twice, not more than 3 times a year, otherwise it will cause menstrual disorders. Long-acting contraceptive pills have certain side effects and the contraceptive effect will be about 98%, but they are not clinically recommended because the dose is relatively large and may cause long-term disruption of the menstrual cycle.