Choledochoscopic gallbladder-preserving surgery (CGPS) has become an alternative and valuable surgical treatment along with cholecystectomy in treating cholecystolithiasis and gallbladder polyps, the two common benign gallbladder diseases. This guideline here has summarized the latest advances on this field. It has updated from its previous version in 2015 on the subjects which include the preoperative preparations of the surgery, indications and contraindications for the surgery, key steps of procedure, postoperative follow-up plan and the preventive measure for disease recurrence and so on. This guideline aims at improving current diagnosis and treatment of benign gallbladder diseases in China, as well as promoting a healthy and normative development of CGPS in Chinese medical community.