The invention discloses a serially connected type perovskite/homojunction silicon laminated solar cell and a preparation method thereof. The laminated solar cell comprises an n-type homogeneous crystalline silicon solar cell serving as a bottom cell based on a PERC (passivated emitter rear contact cell) structure. A perovskite solar cell with a transparent electrode serves as a top cell. The structure of the laminated solar cell sequentially comprises a metal bottom electrode, a bottom electrode opened passivation layer, a local or all n-type heavily doped layer, n-type silicon, a p-type heavily doped emitter, an emitting electrode passivation layer, a tunneling layer, an electron transport layer, a perovskite absorption layer, a hole transport layer, a top electrode buffer layer, a transparent electrode, a metal grid line electrode and an antireflection film from bottom to top. The laminated solar cell is based on the mainstream homojunction PREC solar crystalline silicon cell in the current photovoltaic industry, and is simple in preparation process, low in preparation cost, high in light conversion efficiency and suitable for large-scale industrial production.