Urinary stones: also known as urolithiasis, is a general term for kidney stones, ureteral stones, bladder stones and urethral stones, and is a common and frequent disease in urology. Urinary tract infection and obstruction, endocrine and metabolic disorders, long-term bed rest and insufficient water intake are the main causes of stones. Urinary stones can cause urinary tract obstruction, infection and renal insufficiency, and long-term urinary stone stimulation can induce cancer. Pain and hematuria are the most common symptoms of stones. Classification of stones: urinary stones are divided into upper urinary tract stones and lower urinary tract stones (1) Upper urinary tract stones: including kidney and ureteral stones. (2) Lower urinary tract stones: including bladder and urethral stones. Admission examination: In addition to routine examination, KUB, IVP, RP, CT and other examinations should be done according to the needs of the condition. (1) KUB: i.e., plain urine film, which can observe the presence of opaque stones in the urinary tract and the outline of the kidneys, and requires senna bowel preparation and diet abstinence before the examination. (2) IVP: Intravenous pyelogram, which is a contrast agent injected from a vein and discharged in the urine through the blood circulation to the kidney. It can visualize the urinary tract, observe the morphology of the renal pelvis, ureter and bladder and renal function, as well as understand the function of the fractionated kidney. (3) RP: i.e. retrograde pyelography with ureteral cannulation via urethrocystoscopy to inject organic iodine contrast, suitable for those with unclear display of IVP or contraindications. (4) CT: It can show almost all urinary stones and has the advantages of clear imaging and non-invasive. Choice of treatment plan: Individualized treatment plan according to the site, nature and size of the stone.