1.Urinal tests can show the presence or absence of urine sugar, urine protein, red blood cells, white blood cells, crystalline matter, bacteria, etc. 2.Blood test If high white blood cell count is found, it means there may be an infection. Blood can also be drawn to check kidney function and calcium concentration in blood. 3.X-ray examination X-ray examination is the most important method to diagnose urinary tract stones. It includes urethral plain film, excretory urography, retrograde pyelogram, or percutaneous nephrostomy, etc. 4.B ultrasound examination can diagnose the presence of stones and other combined lesions in the kidney, and determine whether there is fluid in the kidney. In particular, it can detect stones with X-ray transmission, and also provide some evidence of kidney damage caused by stones and the etiology of certain stones. However, ultrasound also has certain limitations, it cannot identify calcification and stones in the kidney, it cannot visualize the relationship between stones and kidney, and it cannot see the specific impact of stones on the kidney, more importantly, ultrasound cannot provide enough evidence on how to treat stones. 5.CT examination CT examination is the first choice for stone diagnosis, which can show the size of kidney, outline, kidney stone, hydronephrosis, renal parenchymal lesion and renal parenchyma remaining, also can identify renal cyst or hydronephrosis; can identify the cause of urinary tract obstruction lesion caused outside the urinary tract, such as retroperitoneal tumor, pelvic tumor, etc.; enhanced imaging can understand the function of the kidney; for acute renal failure caused by stone, CT can help to diagnose. CT can help to establish the diagnosis of acute renal failure caused by stones. 6.Magnetic resonance urography is very effective in diagnosing urinary tract dilatation. It is especially suitable for those with impaired renal function, allergy to contrast agents, and contraindication to x-ray examination. It is also suitable for pregnant women and children.