The belly is very big and bulging after childbirth, which may be caused by poor uterine contraction, and also does not exclude the accumulation of abdominal fat caused by long-term non-exercise after childbirth and excess nutrition, or it may be caused by separation of the rectus abdominis muscle after childbirth. It is recommended to pay attention to proper physical exercise after childbirth, to enhance the body’s resistance, to eat a light diet, to avoid frequent use of fatty and oily food, to eat more seasonal fruits and vegetables, to replenish the lack of vitamins in the body, to promote digestion of the stomach and intestines. If the belly is very large and bulging caused by the separation of the rectus abdominis muscle, it is important to repair yourself through scientific self-exercise to restore the belly to tightness. The general exercise methods are supine lying training method, kneeling training method, flat support, etc. Through the adjustment of diet and appropriate exercise, it is possible to make the stomach back to firmness.