The invention discloses a drainage protection plate which comprises a corrosion-resistant panel, wherein a polyethylene structural plate is arranged on the lower surface of the corrosion-resistant panel, and connected with the corrosion-resistant panel by a positioning bolt; a permeable pipe is vertically mounted between the polyethylene structural plate and the corrosion-resistant panel; the top of the permeable pipe stretches to the external side surface of the upper surface of the corrosion-resistant panel; the bottom of the permeable pipe stretches into a vacuum plastic-sucking plate; the vacuum plastic-sucking plate is connected with the polyethylene structural plate in a clamping manner; protection plate parts are mounted in the polyethylene structural plate and positioned on the two sides of the permeable pipe; the protection plate parts are ofright triangle structures; one surface of the long edge of each protection plate part is fixed on the permeable pipe; air holes are formed in the vacuum plastic-sucking plate; and a permeable plate is mounted on the lower surface of the vacuum plastic-sucking plate. The drainage protection plate is suitable for a waterproof drainage plate for an engineering tunnel, an underground adit, and a top layer of a building for planting, is complete in structure, high in compressive strength, good in air permeability, and high in corrosion resistance, and can exert a certain fire prevention function, and the possibility of rapid burning of the drainage protection plate due to excessively high temperature is low.