Slow fetal development in early pregnancy may be caused by severe early pregnancy reaction, it is best to take vitamin B6 to stop vomiting under the guidance of the doctor reasonably, at the same time, it is recommended to strengthen the diet and nutrition, you can eat more food containing protein. If the vomiting is severe during pregnancy and you can’t eat, it is best to take fluids to replenish energy, which can promote the development of the fetus. If there is hypothyroidism will affect the development of the fetus, it is best to take Eugenol under the guidance of the doctor reasonable treatment of hypothyroidism, and it is also recommended to eat more nutritious food. Anemia during pregnancy requires more food that replenishes blood such as pork liver, lean meat, eggs, etc. You also need to take Colla Corii Asini. Fetal infection by bacteria or virus can also affect fetal development, it is best to use anti-inflammatory drugs or anti-viral drugs under the guidance of a doctor, be careful to use drugs with little side effects on the fetus and pregnant women to avoid causing fetal deformities, and regular obstetric examination.