Micro-bubble generation device capable of performing online cleaning

The invention provides a micro-bubble generation device capable of performing online cleaning. The micro-bubble generation device comprises a cylinder, wherein the cylinder is provided with a first supporting plate close to the closed end and is provided with a second supporting plate close to the open end. A porous sleeve is arranged on the side, close to the open end of the cylinder, of the second supporting plate. A screw is rotatably arranged in the cylinder. One end of the screw penetrates through the closed end of the cylinder and is connected with a driving device, and the other end of the screw is rotatably supported at the closed end of the porous sleeve. The screw is sleeved with a drive sleeve. At least two microporous membrane tubes are arranged between the first supporting plate and the second supporting plate, and the two ends of each microporous membrane tube are respectively in fastened connection with the first supporting plate and the second supporting plate. An air inlet tube and a liquid inlet tube are arranged on the cylinder. Holes are formed in the second supporting plate and the porous sleeve. Micropores are formed in the microporous membrane tubes. The drive sleeve is further sleeved with a sliding scraper plate, and the sliding scraper plate is arranged on the outer wall of the microporous membrane tubes in a slidable-sleeving mode. The micro-bubble generation device is large in bubble generation amount, convenient to maintain and low in operation cost and can ensure that bubble generation is effectively performed for a long time without shutdown for maintenance.