The invention discloses an improved baffle plate type demister. The improved baffle plate type demister comprises an upper bracket, a lower bracket and a plurality of baffle vanes which are arranged between the upper bracket and the lower bracket and are arranged at intervals in parallel; every two adjacent baffle vanes define a flue gas channel; the turning part of each flue gas channel is equipped with a rotary type scraper mechanism; each rotary type scraper mechanism comprises a flexible scraper plate; scraping mechanisms are fixedly arranged at openings in upper and lower ends of each flue gas channel; each flexible scraper plate and the corresponding scraping mechanisms are separately in intermittent contact with the baffle vanes at the two sides of each flue gas channel. Therefore, compared with the prior art, the improved baffle plate type demister disclosed by the invention has the advantage that blockage does not appear.