The invention discloses a coiled tubing hydraulic traction crawler. The coiled tubing hydraulic traction crawler is composed of three major parts, namely the first ball throwing sliding sleeve part, the second hydraulic pulse oscillation antifriction part and the third hydraulic turbine driving traction part. The two functions of hydraulic pulse oscillation antifriction and hydraulic turbine driving traction are integrated into a whole, specifically, a high-pressure fluid inside coiled tubing serves as power, and the upper pulse oscillation antifriction part generates axial vibration to breakfriction between the coiled tubing and the inner wall of a wellbore firstly; and then a high-speed fluid drives a lower hydraulic turbine to generate driving power, a tractor and the coiled tubing atthe rear end of the tractor are dragged to move forwards, spiral self-locking of the coiled tubing can be effectively prevented, and the conveying distance of the coiled tubing in the horizontal section is advantageously increased. When the coiled tubing is conveyed to the set position, a pin on a first sliding sleeve is cut off through ball throwing pressing, the ball sliding sleeve is driven tomove downwards to block a lower flow passing channel, the tractor is prevented from continuously moving downwards, meanwhile, the fluid in the coiled tubing flows out from a fluid outlet in the side face of the first sliding sleeve, and subsequent measure operation such as drag acidification is facilitated.