Fetal reduction can be performed to terminate a fetus that is stunted or malformed in a multiple pregnancy, or to prevent an excess of fetuses from continuing to develop. Fetal reduction surgery but does not affect the continuation of the pregnancy. The location of the fetal heart is first discovered using an ultrasound imaging instrument, then a puncture needle is passed through the pregnant woman’s abdomen to penetrate the fetal sac and fetal heart, and a potassium chloride solution is injected to stop fetal development. If at 49-70 days of gestation, transvaginal reduction can be performed through ultrasound with a shorter puncture distance and high resolution, as well as a lower chance of premature rupture of membranes, miscarriage, and infection after the procedure. After the reduction, you should stay in the hospital for 3-5 days for observation. If there is vaginal bleeding after the operation, it indicates the risk of miscarriage and should be promptly carried out to preserve the fetus, if no abnormality is found in the body before you can be discharged. After the operation, you should pay attention to rest, avoid physical labor, pay attention to nutrient supplementation and eat easily digestible food.