Provided a catheter handle which can be extremely easily operated and can easily stop the operating part at the arbitrary axial position. The catheter handle has a handle body (24); an operating section (22) freely installed and moving in the axial direction relative to the handle body (24); a ring flexible assembly (42) installed between the handle body (24) and the operating section (22), whoseinner surface is contacted to the conical surface (40) of the outer circumference of the operating section (22); washers (41,43) installed in a mode of clipping the flexible assembly (42) from the axial two sides of the handle body (24).