Renal calculi hydronephrosis mainly damages the urinary system. Renal calculi can damage the inner membrane of the kidney, cause pain, and cause hematuria. If the ureteral entrance is blocked, hydronephrosis can be caused. After hydronephrosis, the waist will feel stuffy and uncomfortable, and hydronephrosis will compress the renal essence, resulting in damage to renal function, which can lead to proteinuria. With the extension of time, hydronephrosis is not effectively treated, which will further cause damage to the renal function. In serious cases, it will cause renal atrophy and necrosis, forming serious irreversible changes, which will bring great harm to the health of the body.