Urinary protein patients can appear back pain can be analyzed from the causes of urinary protein, as follows: 1, pyelonephritis and other renal inflammation, pyelonephritis patients can have a small amount of urinary protein, this kind of patients due to inflammation stimulation can appear back pain, fever, urinary frequency, urinary urgency, urinary pain and other symptoms. 2, glomerulonephritis, nephrotic syndrome and other glomerular diseases, glomerulonephritis patients with a large amount of protein in the urine caused by the body’s protein loss and hypoproteinemia. The patient can have low protein anemia, then the patient can appear kidney enlargement and pull the kidney membrane, so there is low back pain. 3, interstitial nephritis, due to the patient taking drugs improperly, can cause inflammation of the interstitium of the kidneys, then the patient can appear low back pain or a small amount of protein in the urine and other symptoms.