At 10 weeks of gestation, the fetus is about 30mm long at the head and hips, and has already taken on a human form, with all organs already developed. Before 14 weeks of gestation, the fetal heart and germ are in the early stages of gestation, and the heart, liver, stomach and other digestive system, nervous system and circulatory system are gradually differentiated. 6 weeks of gestation, the facial organs such as nose and ears start to develop. At about 7 weeks of gestation, the joints of the limbs begin to form, and the fetus gradually develops from an embryo into a fetus. At 10 weeks of gestation, bones begin to form, hair and nails also begin to form, and the vital organs of the fetus are basically fully developed. Within 12 weeks of gestation is the most critical period for the differentiation of the organs of the embryo, once contact with special objects or radiation, taking special drugs may lead to the development of fetal malformations, this stage also requires additional supplementation of folic acid, the daily intake of 400ug can prevent about 80% of neural tube malformations, it is recommended to eat until the third month of pregnancy, with the consultation changed to oral multivitamins, not only contains folic acid, but also other trace elements are beneficial to the fetus. There are other trace elements that are beneficial to the fetus’ bone and mental development. The fetus is 10 weeks old and the shape of the fetus is aptly described as a lentil sprout. It is recommended to have regular checkups, eat a balanced diet, and not to have sex in early pregnancy.