Pregnant women should have regular prenatal checkups, and ultrasound can detect whether the fetus has cleft lip.
In addition, during pregnancy, pregnant women should pay attention to their diet, have balanced nutrition, ensure adequate intake of B vitamins, vitamin C, vitamin D and calcium and iron, etc., 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 malformation, do not smoke and drink, and avoid exposure to toxic substances, dust, radiation and other harmful factors.