The invention relates to a method for preparing monodisperse silver-coated microspheres, and belongs to the fields of silver-coated microspheres, electronic connecting materials and the like. The method comprises the following steps of: preparing monodisperse melamine formaldehyde resin (MF) microspheres by using a dispersion polymerization method; roughing, sensitizing, activating and chemically plating a nickel metal and a silver metal by taking the microspheres as mother spheres so as to obtain the monodisperse silver-coated MF microspheres. The MF mother spheres have the advantages of simple and reliable preparation process, high efficiency, controllable grain size, good monodispersibility and the like. Because the MF microspheres contain active groups such as amino acid, hydroxyl and the like, the coat is complete and high in binding force, the grain size of the silver-coated microspheres can be controlled in a range of 1.0-3.9mu m, the dispersion coefficient epsilon is 0.045-0.067, the monodispersibility is high, the decomposition temperature is about 300DEG C, and the thermal stability is high; moreover, the preparation method is simple and high-efficiency, has the advantages of industrial production, and has good application prospect in the fields of electronic connecting materials such as anisotropic conductive adhesives and the like.