A viewing oral cavity scraper (900), comprising an oral cavity scraper (100), an oral cavity viewing instrument (200) and a connector mechanism (300). The oral cavity scraper (100) is detachably connected to the oral cavity viewing instrument (200) by means of the connector mechanism (300); under the action of a viewing system (24) of the oral cavity viewing instrument (200), direct viewing is provided of the oral cavity scraper (100) being used to scrape or clean the teeth or tongue, with the effects of such cleaning viewable in real time, while allowing for photography or filming of the cleaning process. At the same time, a rinsing device (404) may also be provided upon the oral cavity viewing instrument (200), the rinsing device (404) being usable in conjunction with the oral cavity scraper (100) so that debris of tartar, plaque, and tongue fur can be immediately washed away, providing a comfortable, convenient and highly effective cleaning process.