The invention belongs to the micro nano manufacture technical field, and discloses a full-inorganic perovskite solar energy cell comprising a substrate glass, an ITO conductive layer and a photoanode, a luminous absorption layer and a carbon counter electrode layer; the photoanode is a CdS nanorod array structure having aperture structures; the luminous absorption layer is a CsPbBr3 inorganic perovskite layer embedded in the aperture structures of the photoanode, thus tightly contacting with the photoanode; the carbon counter electrode layer is paved on the top surface of the ITO conductive layer and the top surface of the luminous absorption layer, and formed by screen printing films. The contact areas between the perovskite layer and an electron transmission layer can be obviously improved, thus increasing the charge transmission channels; UV ozone processing is carried out for the grown CdS nanorod array, thus obviously improving the CdS film interface characteristics, reducing crystal grain boundaries, reducing electron defect density of states, reducing unfavorable charge recombination, and improving the electron transmission characteristics.