Pregnant women can make their fetus’ hair dark and dense during pregnancy as long as they maintain balanced and sufficient nutrition to ensure the growth and development of the fetus. There is no need to consume additional food, because generally in addition to food factors, hair is also related to heredity. During pregnancy, pregnant women are advised to eat a balanced diet, nutritional comprehensiveness, can be appropriate to more intake of high-quality protein, such as eggs, milk, lean meat, fish, etc., but also need to pay attention to the intake of fresh fruits and vegetables, as long as the fetal nutritional status is good, the birth of the hair naturally will be lush and glossy, and the development of other organs and systems will also be up to standard. Fetal hair status is not only related to the diet of pregnant women, but also related to genetic factors, if the parents’ hair is more black, the child’s hair will generally be better.