Pregnant women’s hair on the belly is caused by progesterone, it will not affect the fetus and pregnant women, so there is no need to treat it, the symptoms will disappear when the body hormone level returns to normal after delivery. The body changes after pregnancy, such as darkening of the skin tone and long spots, are normal pregnancy reactions. As long as the fetus develops normally and the pregnant woman does not experience pain in the waist and abdomen or vaginal bleeding, there is no need to worry. There are many precautions to take during pregnancy, such as not overworking, dieting, and not taking random drugs, which can affect the development of the fetus and even cause deformities. During pregnancy, you should have regular medical checkups, take in enough nutrition, make a good mix of meat and vegetables, and eat more foods rich in protein, vitamins, calcium and iron, such as dairy products, soy products, fish, shrimp, fresh fruits and vegetables, etc.