The occurrence of fetal harelip can be prevented by the pregnant woman herself in the early stages of pregnancy. After the fetal harelip is identified in the later stages of pregnancy, the normal lip shape of the fetus can be restored through treatment after delivery to be able to restore the speech function of the fetus. The best time for surgery is 3-5 months after birth, and children who have healed well from surgical treatment of lip morphology and closure can have their speech restored with professional speech therapy at 4-5 weeks of age. The treatment process of fetal harelip will be accompanied by nasal malformation, and some children need to undergo nasal malformation correction surgery at the age of 8 years depending on the actual situation. Fetal harelip will also be accompanied by misalignment of upper jaw teeth, and orthodontic treatment should be performed at the age of 12 years. The most effective way to treat fetal harelip is through early examination and detection during pregnancy, and long-term treatment using scientific and effective medical methods.