Renal calcinosis, usually a suspension of calcium-containing particles within the diverticulum of a calyx, is actually a specific type of urolithiasis. The formation of renal calcinolithiasis is associated with urinary tract obstruction, concentration of urine, and chronic inflammation. It is generally divided into two types, mainly including cystic type, mostly in the peripheral part of the renal calyx or renal parenchyma, which is manifested as cysts with sediment-like stones, strong echoes and acoustic shadows or acoustic tails; and hydronephrosis type, in which renal calcium emulsion occurs in hydronephrosis calyx, especially in the area of lower calyx where drainage is not smooth, and it is often combined with renal stones. Patients may have a history of urinary tract infection; some have a history of primary hyperparathyroidism. Similar to the clinical manifestations of renal stones, most patients do not have obvious clinical symptoms; some patients may have symptoms such as low back pain, renal colic, hematuria, etc.; when combined with diverticular infection, the low back pain may be exacerbated, and there are systemic symptoms such as fever. It is recommended that patients with renal calcinosis consult a doctor in time and follow the doctor’s instructions for standardized diagnosis and treatment.