The invention relates to a method for preparing foamed ceramics by utilizing sludge pyrolytic residues and equipment by utilizing the method. The method mainly comprises the following working procedures: raw material smashing, premixing, wet-method ball milling, screening, foaming, maintenance and moulding, demoulding, sintering and cooling. The invention also provides the equipment by utilizing the method for preparing the foamed ceramics by utilizing the sludge pyrolytic residues, the technological process is simple, the automation degree is high, the production process is clean, and the products are green and environmentally friendly. The method and equipment have the main advantages that the sludge pyrolytic residues are utilized as main raw materials to produce the foamed ceramics, on one hand, preparation costs of the foamed ceramics are greatly reduced, and on the other hand, a novel approach is provided for non-hazardous treatment and safe recycling of the sludge pyrolytic residues, and the method and the equipment have good environmental benefits and economic benefits.