The utility model relates to a rotary jet-flow well flushing device. The rotary jet-flow well flushing device is of a hollow structure and is connected with the bottom of an oil extracting pipe of an oil well, an inner cavity of the rotary jet-flow well flushing device is connected with an inner cavity of the oil extracting pipe, a fixed nozzle is fixedly arranged in the rotary jet-flow well flushing device, an impeller mechanism is pivoted with the lower part of the fixed nozzle, liquid sprayed from the fixed nozzle drives the impeller mechanism to rotate, the bottom of the impeller mechanism is fixedly provided with a rotary nozzle capable of spraying the liquid in the impeller mechanism out of a well flushing device, and the rotary nozzle and the sprayed liquid rotate together with the impeller mechanism. Therefore, according to the rotary jet-flow well flushing device disclosed by the utility model, through arrangement of the impeller mechanism, water flow from top to down is jet out of the well flushing device in a manner of 360 DEG jet flow after being rotated by an impeller so as to form high-speed, rotary and all-dimensional covering jet flow, and thus a whole sleeve wall surface is thoroughly flushed through a limited number of jet-flow holes.