Smoking may cause flatulence. There are many causes of flatulence, which may be due to gastrointestinal diseases, liver and gallbladder diseases, malnutrition, and poor dietary habits such as smoking and alcohol consumption. Smoking may cause gastrointestinal disorders, peptic ulcer, chronic gastritis and other diseases, due to the reduction of gastric power, gastrointestinal peristalsis slows down, so that food can not be digested, resulting in the accumulation of food in the stomach, and then appear the symptoms of flatulence; in the smoking of cigarettes, smoke will enter into the stomach, which can stimulate the gastric mucous membrane to a certain degree, and therefore the symptoms of flatulence will occur. If flatulence occurs, you need to go to the hospital as soon as possible, the doctor according to the specific conditions, to formulate individualized diagnosis and treatment plan, in order to avoid delaying the condition.