The invention relates to a preparation method of superfine silver powder for frontal silver slurry of a photovoltaic cell. By introducing graphene oxide timely in a process of synthesizing superfine silver powder by means of a liquid phase reduction method, action between silver and graphene oxide and dispersity of reduced silver particles are improved by means of electrostatic interaction betweenrich oxygen-containing functional groups on the surface of the graphene oxide and silver ions, and meanwhile, the conductivity of the silver powder is improved by means of relatively high electron mobility, so that inhibition of conductivity of the silver particles by a conventional dispersant is overcome. Compared with the prior art, the preparation method has the advantages of simple and easilyoperated process course, good dispersity of silver, high electron mobility, good conductivity and the like.