The utility model provides an electromagnetic collision type inertia separator. A partition board and a current guiding board are arranged in a separating unit to form double channels. Solid particles are trapped from air current by the front channel, and trapped solid particles is separated from the air current by the front channel, so secondary entrainment of the air current in the separating unit is effectively avoided, and separation efficiency is raised. An isolation chamber is arranged on the lower part of the separating unit or between the separating unit and a charging hopper. The isolation chamber is composed of a top board, two side boards, a front board and a back board. The isolation chamber effectively prevents the air current from entering the charging hopper of the utility model and entraining the trapped solid particles again, so the separation efficiency is further raised.