Kidney stone is a benign disease, some kidney stones do not have painful symptoms, more insidious, not easy to find, to know whether you have kidney stones to look from three aspects, the first is the clinical symptoms, kidney stones generally have pain, lower abdominal and lumbar pain, pain is intense, spasmodic pain, sudden onset, pain is unbearable, can be accompanied by low fever, urinary frequency, urinary urgency and painful urination. The second is physical examination. The pain is obvious when the back pain is knocking, and the pain can be relieved when inverted. The third is the auxiliary examination, you can use ultrasound, CT and X-ray examination, urine test routine.