Lower renal calyces stones without pain also need to be treated actively, because with the development of stones, renal colic, hydronephrosis and other symptoms may occur. Kidney stones are stones formed in the kidney by certain components of urine. Clinical symptoms depend on the size, shape, location, presence or absence of infection and other factors to decide, and common clinical manifestations are pain or colic in the lower back and abdomen, nausea and vomiting, hematuria and other symptoms. When the stones in the lower calyx of the kidney are asymptomatic, they also need to be treated actively. When the stones are less than 2cm, extracorporeal shock wave lithotripsy can be taken as treatment; when the stones are larger than 2cm or in the form of staghorn shape, they can be treated by percutaneous nephrolithotripsy and other ways. When stones appear in the lower calyx of the kidney, you should go to the hospital in time, complete the relevant examinations, and under the guidance of the doctor, avoid unauthorized use of medication or treatment.