Most of the left abdominal flatulence is due to indigestion, gastrointestinal dysfunction, gastrointestinal peristalsis weakening and other reasons, can be used to stimulate defecation, exhaust is conducive to alleviate symptoms. Normally, we should pay attention to eat more light and easily digestible food, eat more fresh vegetables and fruits, eat less gas-producing food, avoid cold, greasy and spicy stimulating food, and if necessary, take appropriate digestive drugs and drugs that enhance gastrointestinal motility, such as lactobacillus tablets and mosapride. If the symptoms are not relieved by treatment, we should consider the possibility of organic diseases of the gastrointestinal tract, such as chronic gastritis, colitis, etc. We need to clarify the specific causes through gastroscopy and colonoscopy, and then target treatment.