The feeling of bloating in the stomach may be caused by bad dietary habits, stomach diseases, liver and gallbladder diseases, pancreatic diseases and so on. 1. Bad dietary habits: often consume too much cold, spicy, stimulating food, overeating, excessive alcohol consumption, stimulate the gastrointestinal tract, increase the burden on the gastrointestinal tract, leading to indigestion, resulting in a feeling of bloating in the stomach. 2. Stomach diseases: chronic gastritis, peptic ulcer, gastroesophageal reflux disease and other diseases, stomach damage, gastric peristalsis slows down, the function of food digestion and absorption is weakened, there may be dyspepsia, bloating, nausea, vomiting, congestion and bloating and other symptoms. 3. Liver, gallbladder and pancreatic diseases: Inflammation of the liver, gallbladder, pancreas or tumors lead to insufficient secretion of pancreatic enzymes and bile, and poor digestion and absorption of food, resulting in a feeling of congestion and bloating in the stomach. You should go to the hospital to get a clear explanation of the cause and treatment under the guidance of your doctor.