The invention relates to a paper edge pulp-stripping separation device. The separation device is arranged at a blanket operation part of a papermaking process. The device comprises a pulp-stripping roller assembly which is arranged at the upper end of the blanket operation part and contacts with a blanket, and a support roller which is arranged at the lower end of the blanket operation part, wherein the pulp-stripping roller assembly comprises a roller shaft, a press roller sleeving on the roller shaft, and two pulp-stripping wheels; two pulp-stripping wheels are respectively positioned at twosides of the press roller; one end of each pulp-stripping wheel contacting with the press roller is provided with a scraper mechanism; a contact position between a pulp stripping wheel and the blanket of the blanket operation part is arranged at the position of a water jet slitting line for paper edge cutting; and during operation of the blanket, the pulp-stripping roller assembly and the supportroller operate in opposite directions, and the edge of a paper web on the blanket is transferred onto the pulp-stripping wheels, so edge cutting of the paper web is completed through the scraper mechanism. The separation device provided by the invention can reduce the problem of pulp winds a roller, and improves the appearance quality of an initial paper roll rolled by a paper machine.