The epigastric distension and pain, back pain and tiredness can be analyzed from the stomach disease, gallbladder disease, lumbar disease and other factors, the specific cause of the disease should go to the hospital in a timely manner to confirm the examination. 1. Stomach diseases: If the body has gastrointestinal dysfunction, indigestion, gastritis, gastric ulcer and other symptoms, the stomach emptying caused by abdominal distension, in the long standing and stooping work, resulting in epigastric distension, back pain and tiredness of the symptoms. 2. Gallbladder disease: when long-term irregular diet causes the body to develop cholecystitis, gallstones and other symptoms, will make the body to develop serious discomfort, which will lead to the symptoms, and sometimes nausea, vomiting, diarrhea and other symptoms. 3. Lumbar diseases: when long-term sedentary or overworked lumbar muscles overstrain osteoporosis, the symptoms will also occur. If the symptoms of epigastric distension, lumbar pain, back pain and feeling tired, should go to the hospital in a timely manner for relevant examinations, targeted treatment under the guidance of a professional doctor, to avoid aggravation of the condition, which affects the health of the body.