NOVELTY - Producing slope protecting ecological brick layer using dredged sludge comprises: (a) taking raw materials comprising river channel dredged sludge, cement, gravel, sand and water; (b) mixing the raw materials, and loading the mixture in a precast mold; (c) uniformly mixing soil, fertilizer, pesticide, water and plant seeds with a plant growth substrate; (d) performing compression molding, extruding and conveying into prefabricated molded brick layer pores; (e) feeding with the plant growth substrate into an autoclaved curing workshop; and (f) placing the cured bricks under natural conditions.    USE - The method is useful for producing slope protecting ecological brick layer.    ADVANTAGE - The method: produces ecological brick layer, which exhibits high strength and anti-erosion properties, and satisfies plant growth; avoids problem of difficult plant recovery resulting from erosion and nutrient loss; improves the channel slope protecting ecological system; and creates excellent channel landscapes.    DETAILED DESCRIPTION - Producing slope protecting ecological brick layer using dredged sludge comprises: (a) taking raw materials comprising (in wt.%) river channel dredged sludge (20-30), cement (12-15), gravel (30-40), sand (20-30) and water (8-12); (b) uniformly mixing the raw materials, loading the mixture in a precast mold of the river channel slope protecting brick layer at 15-30 MPa within 6-7 seconds; (c) uniformly mixing (in wt.%) soil (42.8), fertilizer (2-3), pesticide (0.2-0.5), water (40-50) and plant seeds (2.8-5) with a plant growth substrate, whose water content is 30-40%; (d) performing compression molding, extruding and conveying the plant growth substrate into prefabricated molded brick layer pores by an extruding pump; (e) feeding the prefabricated molded brick layer extruded with the plant growth substrate into an autoclaved curing workshop, curing the bricks for 7-10 hours at 120-150 degrees C and 0.8-1.2 MPa; and (f) placing the cured bricks for 28 days under natural conditions, where the compressive strength of the bricks is 28-32 MPa.