Tummy discomfort and back pain may be caused by physiological reasons such as consuming irritating foods, or it may be caused by pathological reasons such as chronic pyelonephritis and acute gastroenteritis. 1. Physiological reasons: consuming too much cold, greasy, spicy and stimulating foods, such as spicy hot, alcohol, fried chicken, strong tea, coffee, ice cream and other foods, stimulate the gastrointestinal mucosa, resulting in abdominal pain, nausea, vomiting, diarrhea, etc.; chronic strain injury, exertion, etc., can result in lumbar pain, lumbar pain, and other conditions. 2. Pathologic causes: (1) Acute gastroenteritis: bacterial, viral, fungal, parasitic and other infections can lead to acute inflammatory reaction of the gastrointestinal mucosa, resulting in nausea, vomiting, abdominal pain, abdominal distension, lumbago and other discomforts, as well as diarrhea, fever and other symptoms. (2) Intestinal tuberculosis: it is a chronic granulomatous inflammation caused by infection of the intestinal tract by Mycobacterium tuberculosis, which can lead to symptoms of tuberculosis toxicity such as night sweats, afternoon low-grade fever, and malaise, and can be accompanied by diarrhea, abdominal pain, lumbago, and abdominal distension. It is recommended to consult a doctor in time to clarify the diagnosis of stomach discomfort and waist pain, and carry out targeted treatment under the guidance of the doctor.