Patients with vague pain in both kidneys, consider a variety of reasons can be caused, the following specific analysis: 1, nephritis, nephrotic syndrome and other renal diseases can be caused, if the patient has glomerulonephritis, nephrotic syndrome and other diseases, the patient appears to have hypoproteinemia caused by water and sodium retention, which the patient will appear to increase the size of the kidneys, the renal membrane is involved in the kidney and cause kidney pain. 2, pyelonephritis and other inflammatory diseases, if the patient Pyelonephritis will have the symptoms of lumbar pain, frequent urination, urinary urgency, urinary pain, fever, lumbar pain is caused by inflammation stimulation.3, lumbar muscle strain or lumbar disc herniation, if the patient has lumbar muscle strain or lumbar disc herniation, it can appear both sides of the kidneys hidden soreness, accompanied by numbness of the lower limbs and other symptoms.