In order to be used as ecological river bank protection materials, sintered block should have a high compressive strength and excellent durability to meet the designed service life of hydraulic engineering. Lake sediment is of high plasticity, high drying shrinkage and its final sintered product has low compressive strength. It is therefore necessary to choose appropriate blending material to compensate the shortcomings of lake sediment. In this paper, shale, gangue, coal cinder, brick powder and coal were selected as blender of the lake sediment. Six mixtures were formed, dried and then fired at 925 ℃ to produce bricks. Properties such as drying shrinkage, loss on ignition, bulk density, compressive strength, water absorption, freeze-thaw resistance were determined. Crystal phases and microstructures of the six samples were studied by XRD and SEM. It is found that the samples containing 10% shale or 10% brick powder present the best physical and mechanical properties and excellent durability, which meet the needs of ecological bank protection materials used in hydraulic engineering. Considering the inferior properties of samples with 2% coal, it is not recommended to use coal as internal fuel to produce sintered block for ecological bank protection materials. Finally, sintered blocks from lake sediment were produced in the manufacturing line in factory and were used in ecological river bank protection engineering.