The main reasons for a little bloating feeling in the lower left abdomen are improper diet, ulcerative colitis, mental tension, etc. The causes need to be clarified and reasonable treatment given: 1, improper diet: if the patient has recently eaten irritating food, such as drinking a lot of alcohol, eating cold food, etc., it will stimulate the mucosa of the gastrointestinal tract, the feeling of bloating in the lower left abdomen, and some patients will be accompanied by abdominal pain and nausea. Patients can relieve themselves by eating a light diet, not eating spicy, stimulating, cold and other foods, regular and quantitative meals, etc.; 2, ulcerative colitis: ulcerative colitis can be triggered by overeating, drinking alcohol or eating irritating foods, after catching a cold, the patient shows abdominal distension, hidden pain, there will be blood in the stool or mucus-purulent stool, the symptoms can be gradually relieved after the stool. Should take oral medication to regulate immunity, regular re-examination of colonoscopy, monitoring changes in the condition; 3, mental tension: patients with excessive mental stress will also slow down the gastrointestinal function of peristalsis, can not be timely gas out of the intestines. At this time, patients should relax, a small amount of gastrointestinal flatulence generally does not require special treatment, can be expelled through burping and anal exhaust. If the gas accumulation in the stomach and intestines is too much, you can exhaust through abdominal massage, or take dimethicone oil tablets for symptomatic treatment under the guidance of a doctor; 4, other: the appearance of the left lower abdomen a little distended feeling, but also need to exclude urinary tract diseases, such as stones, inflammation, etc. Women also need to exclude gynecological diseases.