Drillable scraper is composed of centralizers, device and sleeve combination switch in series, with a drill pipe connection at both ends of the thread. It workshop in conjunction with the drilling, grinding, milling, throught wells and other working tools, so that a downhole tool to complete a variety of different jobs, reduce the number of the drill string from the next, greatly improve operational efficiency and reduce mining casts. After drilling, milling, grinding, throught wells job is completed by pitching from wellhead pressure, the scraper blade play. Hydraulic scraper device can work the same as a conventional scraper device. And loop holes connected to scrape beneath the sleeve wall switch is also open at this time can carried out backward circulation flushing.