Pain on both sides of the waist may be caused by skin, soft tissue, spine, kidney, ureter and female ovary, pelvis and other parts of the disease, the causative factors include trauma, infection, degenerative disease, chronic strain, etc., the etiology of more, through the medical history and laboratory, imaging examination and other auxiliary diagnosis, it is recommended that patients actively seek medical advice. Common clinical causes include: 1, skin, soft tissue lesions: 1, lumbar sprain: soft tissue damage caused by external forces, there will be pain on both sides of the waist, the pain can be aggravated when moving, but also accompanied by activity restrictions; 2, lumbar muscle strain: mostly caused by long-term ambulation and bending, sitting and standing and other poor posture, manifested as lumbar hidden pain, can be recurrent, aggravated after exertion; 3, other: such as herpes zoster virus infection, fasciitis, fibrous tissue inflammation, vasculitis, neuritis, etc., causing damage to the skin or soft tissues, can appear pain symptoms on both sides of the waist. Second, spinal lesions: 1, lumbar disc herniation: belongs to the lumbar degenerative lesions, physical labor, bending, squatting and other movements can trigger or aggravate the pain, can be recurrent; 2, lumbar spinal stenosis: can be caused by congenital dysplasia, or secondary to a variety of acquired injury, stenosis can be light without obvious performance, severe cases are prone to lumbar pain, can be manifested as pain on both sides of the waist, can be accompanied by intermittent claudication performance. 3, other: such as lumbar triple transverse synovial syndrome, lumbar spine tuberculosis, ankylosing spondylitis, lumbar spine osteoarthritis, etc., can also cause pain on both sides of the waist. Urinary system lesions: 1. Upper urinary tract infections: including pyelonephritis, renal pus, renal cortical multiple abscesses, etc., can have unilateral or bilateral lumbago, physical examination can be seen obvious pressure pain in the kidney area, percussion pain in the cribriform angle, often accompanied by fever, urinary frequency, urinary urgency, urinary pain and other symptoms, laboratory tests can be seen pus urine; 2. Upper urinary tract stones: pain and hematuria as the main symptoms, kidney stones can cause pain in the kidney area, large stones in the renal pelvis and kidney stones can cause dull pain in the lumbar region, and ureteral stones can cause colic in the lumbar region, all of which can cause pain on both sides of the lumbar region; 3. Other: such as renal tuberculosis, renal prolapse, renal cancer, etc., all of which can easily cause pain on both sides of the lumbar region. 4. Reproductive system lesions: such as acute tubal infection and acute pelvic inflammatory disease in women, which are mostly caused by pathogenic microbial infections, can have lower abdominal pain and bilateral lumbago symptoms.