OCT catheter draw-back device capable of achieving precise locating

The invention discloses an OCT catheter draw-back device capable of achieving precise locating. The OCT catheter draw-back device comprises a bronchofiberscope body, a clamping device, a lead screw stepping motor and a controller. The lead screw stepping motor is electrically connected with the controller; the lead screw stepping motor is arranged on the bronchofiberscope body, and a lead screw nut of the lead screw stepping motor is in transmission connection with the clamping device; an OCT catheter sequentially penetrates through the clamping device and the bronchofiberscope body. Based on the OCT theory, the precise locating technology and the OCT catheter draw-back technology are combined to achieve precise medical diagnosis on the human body lumen duct.