The difference between having a baby and not having a baby includes changes in abdominal skin, cervical changes, breast changes, and hip changes. 1. Abdominal skin changes: women who have given birth to children will become loose abdominal skin, abdominal fat, some women grow stretch marks have not been completely eliminated, cesarean section of the female abdominal incision. Women who have not had children have tighter, more elastic abdominal skin, no hyperpigmentation, and no stretch marks. 2. Cervical changes: When a woman gives birth to a baby through normal delivery, the baby comes out of the uterus, and the cervix will be in a zigzag shape, while the cervix of a woman who has not given birth to a baby is rounded, and the doctor is usually able to tell this through the gynecological examination. 3. Breast changes: women who have given birth to children are affected by the hormone level in the body, the breasts will become loose, nipple and areola color will deepen, women who have not given birth to children have tighter and more elastic breasts, nipple and areola color is relatively light. 4. Hip changes: women who have given birth to children may have larger hips, hips gradually become fat, not simply pelvic changes, but the hips are caused by excessive fat collection, women who have not given birth to children have relatively small hips.