The present disclosure provides a double-sided display device which includes a first OLED display panel and a second OLED display panel, of which display surfaces are disposed facing away from each other, wherein the first and second OLED display panels have a common shared cathode layer; the first OLED display panel includes a first electron transport layer, a first emissive layer, a first hole transport layer, a first anode layer and a first array substrate that are sequentially laminated on a first surface of the shared cathode layer; and the second OLED display panel includes a second electron transport layer, a second emissive layer, a second hole transport layer, a second anode layer and a second array substrate that are sequentially laminated on a second surface of the shared cathode layer. The present disclosure further provides a manufacturing method of the double-sided display device as mentioned above. In comparison with the prior art, the present disclosure obtains a lighter and thinner double-sided display device.