The invention provides a surrounding type efficient film coating device for a large pipeline, and belongs to the technical field of pipeline processing. The device comprises a base, a main supportingrod, a first hydraulic rod, second hydraulic rods, keying plates, motors, third hydraulic rods, rolling wheels, first guide wheels, a second guide wheel, a ring rotating frame, a fixing rod, a first sliding rail, a second sliding rail, a fourth hydraulic rod, a sliding plate, a flat spring, a sliding device, a rolling wheel and a roller, wherein the top surface of the base is rotationally connected with the main supporting rod, the first hydraulic rod is fixedly connected to the top surface of the base, the tail end of the top of the first hydraulic rod is fixedly connected into the main supporting rod, the second hydraulic rods are fixedly connected to the front end and the rear end of the base, the keying plates are movably connected to the front end and the rear end of the top of the main supporting rod, the surfaces of the tops of the second hydraulic rods are fixedly connected into the keying plates, the surfaces of one sides of the keying plates are fixedly connected with the motors, the left sides and the right sides of the keying plates are fixedly connected with the third hydraulic rods, the rolling wheels are rotationally connected to the outer sides of the third hydraulic rods through bearings, and the first guide wheels are rotationally connected to the tail ends of one sides of the third hydraulic rods.