The ink scraping mechanism comprises a base, a supporting frame and a vertical frame are arranged at the top of the base, a roller is rotationally connected to the inner side of the supporting frame, a mounting base is arranged at the top of the vertical frame, the top of the mounting base is connected with a cover plate through two clamping mechanisms, and a flexible supporting mechanism is arranged between the mounting base and the cover plate. The flexible supporting mechanism can provide certain elastic buffering and supporting for the blade, so that the blade can be better attached to the roller, the pressing mechanism is arranged, replacement and maintenance of the blade are facilitated, the clamping mechanism is arranged, the clamping mechanism is used for clamping the blade, and the blade can be better attached to the roller. According to the ink scraping mechanism, the cover plate can be conveniently opened and closed and closed when the blade is installed and maintained, the cover plate and the installation base are beneficial to keeping the stability and safety of the ink scraping mechanism, and therefore through the structure, the problem of non-uniform ink scraping is effectively solved, meanwhile, the blade can be conveniently disassembled, assembled, replaced and maintained, and the working efficiency is greatly improved.