The common symptoms of kidney stones are lumbar pain and hematuria, but they can also be asymptomatic. 1, lumbago: mainly manifested in pain, soreness and discomfort in the lower back, etc. Some patients with stones slipping into the ureter will also lead to severe colic. Colic is a typical symptom of kidney stone, often occurring suddenly, one side of the waist back cut-like pain. It may radiate to the lower abdomen, vulva and inner thighs. The duration of the pain varies. It is accompanied by nausea and vomiting, pallor, and profuse sweating. The pain is mostly followed by hematuria, and some patients can be found to excrete stones. 2.Hematuria: After renal colic, there is mostly hematuria, of which only some can be found red with the naked eye, and most are microscopic hematuria. 3. Asymptomatic: A few stones in the renal pelvis are large, inactive, and without obvious obstructive infection, they can be asymptomatic for a long time. Many patients find kidney stones by chance during physical examination, usually without any symptoms. 4, hydronephrosis: stones slowly grow up and block the renal pelvis and ureter, resulting in hydronephrosis. Long-term hydronephrosis will cause impaired kidney function on the affected side. Bilateral hydronephrosis may lead to uremia in severe cases. 5. Fever: Kidney stones can lead to obstruction and infection. Stones obstruct the discharge of urine, which can easily cause bacterial infection, and in serious cases, can lead to sepsis, which is life-threatening. The presence or absence of symptoms of kidney stones is related to the size of the stones. Some even to the complete loss of function of the affected kidney, the symptoms are still not obvious. The usual physical examination can be done by ultrasound and X-ray.