Stones 4cm from the renal hilum can be treated with drugs, extracorporeal shock wave lithotripsy, ureteroscopy lithotripsy, etc. depending on the size and morphology of the stone. 1. If the stone is <0.6cm, medication can be used to remove the stone. For example, uric acid stones can be alkalized with sodium hydrogen potassium citrate and sodium bicarbonate to alkalize the urine. Contraindications include urinary tract obstruction distal to the stone. 2. Extracorporeal shock wave lithotripsy is used for stones between 0.6cm and 2cm in size. Contraindications include urinary tract obstruction at the distal end of the stone, severe cardiovascular disease, unclear localization of the stone, and high renal position. 3. Ureteroscopic lithotripsy: Holmium laser can be used to break up the stone and remove it through ureteroscopy. Contraindications include coagulation disorders and obesity. Specific treatment measures, but also need to go to a regular hospital, under the guidance of the doctor for treatment. The above drugs need to be used under the guidance of a professional physician, to avoid blind use of drugs, so as not to aggravate the condition.