The purpose of the invention is to provide a device for accurately processing a rock CCNBD test specimen. According to the device for accurately processing the rock CCNBD test specimen, an operating platform is arranged on a base, a cutting motor lifting device is fixed above the base through one vertical column, a saw web is fixed to a cutting motor through a bolt, the cutting motor is connectedwith the cutting motor lifting device, test specimen position measuring devices are installed and arranged inside a fixture, the fixture is connected with fixture lifting devices, the fixture liftingdevices are connected with a fixture rotating shaft, the fixture rotating shaft is connected with a fixture rotating motor, and the fixture rotating motor is fixed above the base through one verticalcolumn. By means of the device for accurately processing the rock CCNBD test specimen, the purpose of accurately processing the rock CCNBD test specimen is achieved.