Device and method used for detecting post-tensioned beam prestressed pipeline

The invention discloses a device and a method used for detecting a post-tensioned beam prestressed pipeline. The device comprises a camera, a display, a power supply, a video power line, first to Nth sections of stay bars, a steel wire hose, a fine hose and a camera bracket, wherein the camera bracket is installed at the front end of the steel wire hose; the camera is installed on the camera bracket; the stay bars are in the shape of hollow pipes, and the front end of the first section stay bar is connected to the rear end of the steel wire hose; one end of the video power line is connected with the camera, the other end is connected with the display and the power supply, and the part, positioned outside the first section stay bar, of the video power line is sleeved with the fine hose; and the rear end of the first section stay bar is sequentially connected with the second to the Nth sections of stay bars. The device and the method have the advantages of being simple and convenient in operation, capable of di