The hazards of stones on the body are as follows: 1, pain, ureteral stones complicating acute hydronephrosis can have renal colic, pain can also travel along the ureter, radiating to the inguinal area and the perineum, small stones discharged through the urethra can cause stabbing pain during urination. 2, due to the common innervation of the ureter and intestinal tube, can cause nausea, vomiting, abdominal distension and other gastrointestinal symptoms. 3, complication of infections, most commonly found in the bladder stones, ureteral Stone-induced urinary tract obstruction patients, can be secondary to pyelonephritis, renal pus, etc. 4, stone obstruction, can cause hydronephrosis, increased pressure in the renal pelvis, affecting renal function, and even obstructive renal failure. 5, due to the stimulation of the stone can make the patient’s blood pressure rise, heart rate accelerated, prone to complicate acute cardio-cerebral and cerebral vascular accidents, especially in patients with cardio-cerebral and cerebral vascular underlying disease.