The invention discloses a manufacturing method for the solar energy cell with double-layer perovskite film structure, and the method comprises the following steps: 1) selecting a conductive substrate; etching patterns on the conductive substrate and obtaining the etched conductive substrate; 2) preparing an electron transport layer or a hole transport layer; (3) preparing a film with a double-layer perovskite structure; 4) preparing a hole transport layer or an electron transport layer; and 5) hotly plating a gold or silver electrode on the hole transport layer or the electron transport layer to obtain an n-I-P-type or p-I-N-type solar cell with the double-layer perovskite thin film structure. The invention further discloses a solar energy cell manufactured and obtained from the above method. The manufacturing method is environmentally friendly, can change the morphology, the crystallinity and the interface of the perovskite film and increases the photoelectric performance of a device.