The degree of back pain caused by urinary stones is mainly related to the size of the stone as well as its location and the presence of an obstructing infection. Different from what we know, kidney stone pain is not proportional to the size of the stone. In other words, large stones do not necessarily induce pain, and small stones may not be painless. If the stone rubs against the peristaltic ureteral mucosa, irritatingly causing ureteral spasm, the patient will feel back pain: when the stone is located in the peristaltic function of the renal pelvic-ureteral junction or the whole ureter, even if the stone is very small, it will be enough to cause severe pain in the lower back. The pain is incomparable to other low back pain, and can be accompanied by radiating pain on the same side of the abdomen, urinary frequency and urgency, nausea when in pain. We call it “renal colic”. On the contrary, the stone is larger, the activity amplitude is not so easy to cause pain, but often cause obstruction, even if only partial obstruction, will cause progressive damage to renal function. After the obstruction occurs, the hydronephrosis continues to worsen, the kidney function is gradually impaired or even disappeared, and finally becomes a cystic bag containing a large amount of urine. For relatively small stones, the vast majority of them are treated through a combination of Chinese and Western medicine to promote ureteral peristalsis and push the stones downward until they are discharged. In the process of lithotripsy treatment, the stone downstream friction ureter, also often appear colic phenomenon, this is the effective performance of lithotripsy treatment. If the pain is severe and intolerable, infusion of antispasmodic pain relief. Stones located in the ureter can stimulate mucosal congestion and edema, stay in one place for a longer period of time can cause inflammatory polyp formation, fibrous tissue hyperplasia, granulation encircling, so that the movement of the stone and discharged obstruction, but also to the ESWL and ureteroscopy lithotripsy to increase the difficulty of minimally invasive technology today, should not be waiting for a long time to wait and see if the stone is not discharged in 3 ~ 4 weeks, it should be carried out interventional treatment, especially the diameter of the transverse diameter of > 5mm. If the stone is not discharged within 3~4 weeks, then interventional treatment should be performed, especially for those with transverse diameter >5mm. Our hospital adopts the latest minimally invasive ureteroscopy technology and microscopic laser lithotripsy, can be “one-step” treatment of ureteral stones, the larger stones can basically be taken out at once, greatly avoiding the extracorporeal microwave lithotripsy stone residue, stone street formation. Surgical damage is small, recovery is fast, and hospitalization time is also very short.