Bladder pain, low back pain need to go to the hospital for further examination to clarify the possible causes: 1, acute pyelonephritis, can cause low back pain, accompanied by frequent urination, urinary urgency, pain in the lower abdomen, or accompanied by a feeling of incomplete urination and other symptoms, and at the same time can be accompanied by cloudy urine, often due to the infection of the pathogenic bacteria, resulting in urethral mucosal congestion, edema, vesiculoblastoma, and so the pain will be produced, but also combined with the feeling of irritation of the urinary tract, need to be Further urinary system ultrasound, urine routine, urine culture laboratory tests to clarify. 2, kidney stones, stones can lead to pain in the kidney area, in the process of elimination, can also lead to pain in the abdomen or lower abdomen, the location of the stone is different, different sizes, and even the number of stones are different, the pain caused by the symptoms are not the same, and may be accompanied by urinary bleeding, need to carry out Ultrasound examination of the urinary system to further determine. 3, elderly patients also need to further exclude the presence of tumors of the urinary system, tumor volume increase can cause local tissue destruction, resulting in lumbar and abdominal pain.