The utility model provides a flexographic plate ink printing device. The flexographic plate ink printing device comprises a rack, an ink conveying roller, an ink transfer roller, a printing plate roller, an impressing roller and an ink scraping mechanism. The ink conveying roller, the ink transfer roller, the forme roller and the impressing roller are rotationally installed on the inner wall of the rack in parallel, the ink conveying roller is located in an ink storage groove installed on the rack and makes contact with ink, the ink transfer roller is in clearance fit with the ink conveying roller, the forme roller is in clearance fit with the ink transfer roller and the impressing roller, and a printing material penetrates through the position between the forme roller and the impressing roller. The ink scraping mechanism is installed on the top of the rack and located above the impressing roller and comprises a scraping plate and a lifting mechanism, the lifting mechanism is installed on the top of the rack, and the top of the scraping plate is installed at the lifting end of the lifting mechanism. According to the utility model, the ink accumulated on the impressing roller is scraped off through the scraping plate arranged at the top of the rack, so that the ink accumulated on the impressing roller is prevented from polluting the back surface of a printing material and influencing the quality of a printed matter, and the efficiency of scraping off the ink on the impressing roller is improved.