Pregnancy is a complex physiological process and the pregnant woman’s body undergoes a series of changes as the pregnancy progresses. These include metabolism, blood circulation, immunity, endocrine, and skin. Among them, the skin, hair, nail changes are the most intuitive, but also many pregnant women are more worried about. The main reason for this is the rapid expansion and pulling of the skin, which breaks the subcutaneous muscle fibers, and the effect of hormones on the elastic fibers of the skin. Stretch marks begin as a purplish red color and gradually fade to a skin tone. The treatment is to use moisturizing moisturizer right after the 4th month of pregnancy. Such as olive oil or ve cream and other massage can reduce the generation of stretch marks. Wang Qi, Department of Dermatology, The First Affiliated Hospital of Baotou Medical College 2, pigmentation: After pregnancy, due to changes in hormone levels during pregnancy, pigmentation will occur in the areola, armpit, umbilicus and vulva of pregnant women. More than 50% of pregnant women will have chloasma, and the above pigmentation can fade away within one year after delivery. If it does not fade, laser treatment or spot removal cream can be used. 3.Hair and nail changes: due to endocrine hormone changes, many pregnant women have more body hair, and resting hair loss can occur three months after delivery. It can recover after several months. During pregnancy, the nail is brittle and the distal nail is peeled off, so more calcium, multivitamins and trace elements should be supplemented during pregnancy.