The invention discloses a method for manufacturing ZnO nanometer fiber/electrochemical-deposition-Cu2O inorganic solar energy cells. The method comprises steps that, a spin coating method is applied on ITO conductive glass to manufacture a ZnO film, and an electrospinning method is employed to manufacture a ZnO nanometer fiber network; an electrochemical-deposition method is employed on the ZnO nanometer fiber network to manufacture Cu2O, after heat treatment on an active layer in a glove box, an Ag electrode is manufactured through heat vapor plating; heat treatment on the active layer of the heat vapor plating electrode is carried out to acquire the ZnO nanometer fiber/electrochemical-deposition-Cu2O inorganic solar energy cells. According to the method, through introduction of ZnO nanometer fiber, the interface between the ZnO and the Cu2O increases, conduction of photoproduction charges are facilitated, charge composition reduction is facilitated, cell efficiency is improved, and the manufacturing method further has advantages of simple production technology and low cost.