The utility model relates to the technical field of cleaning devices, in particular to a
waste gas treatment pipeline cleaning device which comprises a fixed cylinder, a supporting ring is fixedly connected to the side face of the inner wall of the fixed cylinder, a supporting plate is arranged on the inner side of the supporting ring, and a rotating ring is rotationally connected between the supporting ring and the supporting plate. A plurality of scraping plates are fixedly connected to the outer side of the rotating ring, and a high-pressure air injection
assembly is arranged in the fixed cylinder; and a water spraying cleaning
assembly is arranged in the fixed cylinder. According to the pipeline cleaning device, after oil stains and
dust particles are blown to be loose through the high-pressure air injection
assembly and the water spraying cleaning assembly, high-pressure washing is conducted, the inner wall of the pipeline is efficiently cleaned, the
dust particles and the oil stains on the inner wall of the pipeline are thoroughly scraped away through the arrangement of the rotating ring and the scraper which can rotate, and the inner wall of the pipeline is thoroughly cleaned.