Deficiency of yang qi can cause flatulence to a certain extent, but flatulence is not necessarily caused by deficiency of yang qi, and should be analyzed specifically according to the condition. Insufficient yang qi, warming failure, can lead to spleen and stomach cold (spleen and stomach weak cold), etc., so that the stomach does not putrefy (initial digestion of food, the formation of food mince) water and grain, the spleen does not transport fluid, the middle jiao spleen and stomach elevation dysfunction, then it can cause qi and blood operation malfunction, see abdominal distension uncomfortable, bowel movement disorders, and other symptoms. But yang qi insufficiency will not always appear flatulence, such as kidney yang insufficiency (lack of yang qi of the kidneys) is more manifested as lumbar and knee soreness (lumbar and knee soreness and weakness of the feeling) cold pain, fear of cold, etc., may not see flatulence. Yang qi deficiency will affect the function of internal organs and other different, and see the symptoms of flatulence, flatulence can also be seen in emotional stimulation, resulting in stagnation of qi, specific should be combined with the relevant symptoms and other comprehensive analysis to identify. The distension should be treated under the guidance of a doctor.