Middle-aged people with a big stomach to consider may be related to physical quality, age factors, constipation, cirrhosis and other disease factors and other factors. 1. Physical quality: after middle age, the pressure of work and life may be relatively high, lack of physical exercise, low physical quality, which will lead to excess adipose tissue in the body, can not be consumed in a short period of time to the faster, metabolism, and thus the accumulation of the abdomen can cause the stomach to become large performance. 2. Age factors: after middle age, the body’s various functions will decline, in which case digestion and absorption will decline, metabolism will slow down, for the consumption of fatty foods can not be fully metabolized, may cause excessive accumulation of abdominal adipose tissue, resulting in a larger stomach. 3. Disease factors: the presence of long-term intestinal flatulence, long-term constipation, intestinal tumors, cirrhosis and other diseases can also lead to a large stomach. At the same time may also be accompanied by abdominal pain, diarrhea, nausea, vomiting and other digestive symptoms. In addition to physiological factors, there may be other pathological factors, if there are uncomfortable symptoms, it is recommended to go to the hospital as soon as possible.