NOVELTY - A composite membrane electrode-containing quasi-symmetric solid oxide fuel cell comprises an anodic film deposited on inner wall of a porous substrate and a dense electrolyte film deposited on inner wall of a cathode film of the porous substrate, where the anodic film comprises cobalt doped manganese oxide-samarium doped cerium oxide and the cathode film comprises manganese cobaltite-samarium doped cerium oxide.    USE - Composite membrane electrode-containing quasi-symmetric solid oxide fuel cell.    ADVANTAGE - The fuel cell has better catalytic activity and high stability, and can be prepared in a simple and rapid manner.    DETAILED DESCRIPTION - A Composite membrane electrode-containing quasi-symmetric solid oxide fuel cell comprises a anodic film deposited on inner wall of a porous substrate and a dense electrolyte film deposited on inner wall of a cathode film of the porous substrate, where the anodic film comprises cobalt doped manganese oxide-samarium doped cerium oxide (Co-MnO2-SDC) and the cathode film comprises manganese cobaltite-samarium doped cerium oxide (MCO-SDC), where MCO is MnxCo3-xO4, x is 0-3, SDC is SmyCe1-yO2 and y is 0-0.5. An INDEPENDENT CLAIM is also included for a method for manufacturing a composite membrane electrode-containing quasi-symmetric solid oxide fuel cell, which involves mixing electrolyte powder, dispersing agent, binder, plasticizer and solvent, subjecting mixture to ball milling, mixing milled mixture with electrolyte slurry, subjecting electrolyte slurry to vacuum defoaming, removing air from slurry, casting slurry to obtain a dense electrolyte film, mixing porous substrate powder, pore-forming agent, dispersing agent, binder, plasticizer and solvent, subjecting mixture to ball milling, mixing milled mixture with slurry, subjecting slurry to vacuum defoaming, removing air from slurry, casting slurry to obtain a blank porous substrate, compacting electrolyte film on substrate by heat-pressing, sintering substrate at 1300-1500 degrees C, dissolving manganese, cobalt, samarium, cerium, water-soluble inorganic salt, complexing agent and surface active agent in water, stirring to obtain composite film immersed with manganese, cobalt, samarium, cerium, water-soluble inorganic salt, complexing agent and surface active agent, depositing film on inner wall of porous substrate to form a thin film catalyst layer and carrying out hydrogen reduction to obtain finished product.