The utility model relates to a corrugated plate type air pre-heater. The corrugated plate type air pre-heater comprises corrugated plates (1), left and right sides of which are provided with downwardly-turning edges formed by stamping. Front and rear sides of the corrugated plates are provided with upwarpping edges formed by stamping. Corrugated bodies (2) formed by stamping are arranged on bodies of the corrugated plates (1) which are arrayed in a laminated mode. A corrugated plate combination body (4) provided with a sealing channel is formed in such a manner that the two adjacent corrugated plates (1) are oppositely arranged and two groups of edges on the left and the right or at the front and the back are welded. Four corners of each corrugated plate (1) are secured to a framework (3). The corrugated plate type air pre-heater has following beneficial effects: heat transfer of heat transferring mediums between smoke and air in an orthogonal flow direction is carried out in the sealing channels of the two adjacent corrugated plate combination bodies; the corrugated bodies, formed by stamping and arranged on the bodies of the corrugated plates, are used for supporting between the two adjacent corrugated plates; and by changing supporting positions of the corrugated bodies in a low temperature area of a heat transferring plate and changing flow patterns of the mediums to increase the temperature of a plate wall, dew point corrosion due to low temperature is effectively delayed and prevented.