NOVELTY - A solid oxide fuel cell is prepared by spraying slurry of anodic functional layer on substrate using carrier gas to obtain green body of anodic functional layer; introducing slurry of anodic functional to green body of anodic functional layer; spraying electrolytic spraying slurry prepared by metal oxide powder on functional layer of functional layer-anodic green body using carrier gas to obtain green body with third-layer structure; and sintering prepared green body with third-layer structure; and preparing cathode on electrolytic layer of half-cell to obtain single cell of fuel cell.    USE - Method for preparation of solid oxide fuel cell (claimed).    ADVANTAGE - The method is simple, and provides cell with no crack. The activated interface of conducting communicating reaction of anodic microscopic structure has large area. The gas tightness of the electrolytic layer is good and the conductivity is high. The contact of the anode and the electrolyte is good and there is no cracking layer.    DETAILED DESCRIPTION - The solid oxide fuel cell is prepared by:    (A) spraying slurry of anodic functional layer on substrate using carrier gas to obtain green body of anodic functional layer of 1-30 mu m thick;    (B) introducing slurry of anodic functional to green body of anodic functional layer, where substrate can be removed after it is dry, to obtain functional layer-anodic green body of 0.4-3 mm thick;    (C) spraying electrolytic spraying slurry prepared by metal oxide powder on functional layer of functional layer-anodic green body using carrier gas to obtain green body with third-layer structure, where thickness of electrolytic layer is 3-30 mu m;    (D) sintering prepared green body with third-layer structure at 1300-1450 degrees C to obtain anodic half-cell; and preparing cathode on electrolytic layer of half-cell to obtain single cell of fuel cell.    The electrolytic spraying slurry comprises powder, solvent, dispersant, caking agent and plasticizer at weight ratio of 5-20:100:0.5-2:1-4:1-4. The powder is yttria-stabilized zirconia, gadolinium-doped ceria or niobium-doped barium cerate. The solvent is ethyl alcohol, butanone, toluene and water. The dispersant is triethanolamine, fish oil and citric acid. The caking agent is polyvinyl butyral, methyl cellulose and polyvinyl alcohol. The plasticizer is dibutyl phthalate and polyethylene glycol.