NOVELTY - Electrostatic self-assembly preparation of carbon fuel cell double-metal catalyst includes preparing aqueous precursor solution with positive protective agent, uniformly stirring, reducing precursor, standing; preparing chloroplatinic acid hexahydrate and palladium chloride aqueous solution with negative protective agent, uniformly stirring, boiling, cooling, standing; performing electrostatic self assembly to positively and negatively charged protection of metal nanoparticles colloidal solutions; adding nanocarbon carrier material, filtering, cleaning filter cake, drying, and grinding.    USE - Method for preparing electrostatic self-assembly of carbon fuel cell double-metal catalyst (claimed).    ADVANTAGE - The method is simple and fast and has low cost.    DETAILED DESCRIPTION - Electrostatic self-assembly preparation of carbon fuel cell double-metal catalyst comprises:    (A) preparing aqueous precursor solution, adding positive protective agent, uniformly stirring, adjusting pH with diluted acid to less than 2, adding sodium borohydride solution, reducing precursor and adjusting pH to less than 4, standing to obtain positively charged protection of metal nano particle colloid solution, and preparing metal nanoparticle colloid solution of precursor comprising chloroplatinic acid hexahydrate, ruthenium chloride, or palladium chloride;    (B) preparing chloroplatinic acid hexahydrate and palladium chloride aqueous solution, adding negative protective agent, uniformly stirring, adjusting pH with dilute base to more than 10, boiling under reflux in oil bath for 8-12 hours, cooling solution and adjusting pH to more than 9, and standing to obtain negatively charged metal nanoparticles colloidal solution;    (C) putting positively charged and negatively charged metal nanoparticles colloidal solutions in electrostatic self-assembly to achieve mixing to obtain bimetallic nano colloid solution; and    (D) adding nanocarbon carrier material, filtering, washing and cleaning filter cake, vacuum drying, and grinding to obtain carbon fuel cell double-metal catalyst.