Symptoms of kidney stones include low back pain, hematuria, fever, anuria and acute renal insufficiency, chronic renal insufficiency, and expulsion of stones. 1. Low back pain: when small stones cause ureteral obstruction, they can stimulate the smooth muscle of the ureter, and renal colic occurs. When renal stones cause obstruction leading to hydronephrosis, it can also cause swelling and pain in the lower back. 2. Hematuria: the downward migration of renal stone can damage the mucosa of renal pelvis or ureter, which can be manifested as microscopic hematuria or microscopic hematuria. 3. Fever: when kidney stones are combined with infection, fever, chills, dizziness and fatigue can also occur. 4. Anuria and acute renal insufficiency: when obstruction occurs in bilateral kidney stones or isolated kidney stones, urinary tract obstruction may occur, and anuria and acute postrenal renal insufficiency such as nausea, vomiting, loss of appetite and edema may appear. 5. Chronic renal insufficiency: long-term chronic obstruction can lead to renal parenchyma atrophy, which can lead to nausea, vomiting, anemia, edema and other manifestations. 6. Discharge of stones: some patients can discharge stones through urine, often after the occurrence of renal colic. Patients should go to the hospital in time when the above symptoms occur. If there are kidney stones, please standardize the treatment under the guidance of the doctor.