The invention relates to a method for preparing a calcareous biofuel rod by processing domestic waste by using high-calcium muddy industrial waste as plasticity forming materials, which is applied to treatment on the high-calcium muddy industrial waste and the domestic waste. The method comprises the following processes of: A, spraying aqueous solution of antibacterial odor removal agent onto the domestic waste in the turning and grinding process to obtain the turned, sorted, ground and deodorized domestic waste; B, adding 700 to 850kg of the high-calcium muddy industrial waste serving as the plasticity forming materials into per ton of the turned, sorted, ground and deodorized domestic waste, adding 2 to 5kg of ferrocene and 1 to 2kg of sodium acetate and uniformly mixing and stirring to obtain domestic waste extruded materials; and C, carrying out extrusion and forming on the domestic waste extruded materials by utilizing a forming machine to obtain the product with the length of 3 to 50mm and the diameter of 25 to 33mm and drying the product until the moisture content of the product is 10 to 30 percent so as to obtain the calcareous biofuel rod, wherein the extrusion pressure is in the range of 680 to 750Kg/cm<2>. The method has the advantage that the obtained calcareous biofuel rod has good sulfur-fixing and denitration effects, high combustion value and low discharge of oxynitride, has no odor and is convenient to transport and store.