The utility model provides a coal power jetting device for a blast furnace, belonging to the technical field of metallurgy. According to the technical scheme, the coal power jetting device comprises a jetting tank, a fluidizing pipeline, a jetting pipeline, a feeding pipeline, a pressurizing pipeline and a spreading pipeline, wherein the jetting tank is provided with a fluidizer at the bottom of an inner cavity; and the fluidizing pipeline, the jetting pipeline, the feeding pipeline, the pressurizing pipeline and the spreading pipeline are connected with the jetting tank. The pressurizing pipeline is provided with a main pressurizing valve, a secondary pressurizing valve and a pressure stabilizing valve; an air source is connected with an air inlet of the main pressurizing valve; a pressurizing opening on a top cover of the jetting tank is connected with an air outlet of the main pressurizing valve; an air inlet of the secondary pressurizing valve is connected with an air outlet of the main pressurizing valve, and an air outlet of the secondary pressurizing valve is connected with an inflating opening of a conical section at the lower part of the jetting tank; and the pressure stabilizing valve is connected with the pressurizing opening on the top cover of the jetting tank. According to the coal power jetting device for the blast furnace provided by the utility model, the pressurization is carried out on a tank cavity from the top and the bottom of the jetting tank by using two pressurizing branches, so that not only is the pressurizing time reduced and the working efficiency of the coal power jetting device for the blast furnace is improved, but also the lower-part pressurization further improves the fluidization degree of the coal powder in the tank. Therefore, the coal powder is jetted uniformly, and the jetting pipelines are smooth.