Methods :Choledochoscopy was performed in 256 cases, replacement of T-tube was conducted by direct insertion technique in 85 cases (Group A),and by a wire-guide technique in 171 cases(Group B).

• 方法:256例次纤维胆道镜检查术后患者分成两组；其中85例次采用直接插入法（直接法组）重置T管，171例次采用导丝引导法（导丝法组）重置T管。