We report a case of Mirizzi's syndrome managed by extracorporeal shock wave lithotripsy and endoscopic sphincterotomy. An 84-year-old man who was suspected of choledocholithiasis but preferred non surgical treatment was transfered to our hospital. The stone impacted in the dilated cystic duct was removed by endoscopic sphincterotomy after fragmentation by extracorporeal shock wave lithotripsy. Endoscopic retrograde cholangiography revealed that the dilated cystic duct branched into the lower common hepatic duct. Long-term results should be assessed carefully, but extracorporeal shock wave lithotripsy in combination with endoscopic sphincterotomy for Mirizzi's syndrome should be actively attempted because it is a non-invasive and effective technique.