Objective To investigate the method of the treatment on cholecystolithiasis combined with calculus of common bile duct (CBD) by laparoscopy with combination of choledochoscope and duodenoscope and its significances. Methods Forty-two patients with cholecystolithiasis combined with calculus of CBD were treated by laparoscopy with combination of choledochoscope and duodenoscope from Jan. 2007 to Dec. 2008 in this hospital. Under general anesthesia, laparoscopic cholecystectomy was performed first, then the anterior wall of CBD was opened, calculus of CBD was treated by choledochoscope and duodenoscope intraoperatively. Then primary suture of the CBD was performed under laparoscope and nasobiliary drainage duct was placed. Results One case was converted to laparotomy, 41 cases succeeded and left hospital after being taken off the nasobiliary drainage duct in 5-7 d. No case died, no bile leakage, no bleeding or perforation of upper digestive tract, and no acute pancreatitis happened after operation. Conclusion Laparoscopy with combination of choledochoscope and duodenoscope treating cholecystolithiasis combined with calculus of CBD is a safe, effective and quickly recovering method with less sufferings and trauma.