Women in the process of pregnancy, with the development of the fetus uterus increases, the pressure on the abdominal wall tissue, will make the abdominal wall of pregnant women become loose, and excessive dietary intake during pregnancy, reduced activity, too much subcutaneous fat deposition, will lead to postpartum abdominal flaccidity, become large. After the birth of a child, the recovery of the enlarged abdomen needs a process, just after the birth of a child, the belly is very large is completely normal, the fastest in the postpartum forty-two days to about two months back to normal, slow may be three months to six months back to normal. There are some women, after giving birth, can not control the diet well, but also can not adhere to physical exercise, the enlarged abdomen for a long time can not be fully restored to before the birth of a child, after giving birth in order to promote the recovery of the abdomen, the mother should strictly control the diet, and adhere to the appropriate physical exercise.