Pregnant women should have regular prenatal checkups, and ultrasound can detect whether the fetus has a cleft lip.
In addition, pregnant women should pay attention to their diet during pregnancy, have balanced nutrition, ensure adequate intake of B vitamins, vitamin C, vitamin D and calcium and iron, maintain a calm mood and avoid large emotional fluctuations. Avoid the use of hormones, anti-tumor drugs, anticonvulsant drugs and other drugs that may cause fetal malformations, do not smoke and drink, and avoid exposure to toxic substances, dust, radiation and other harmful factors.