The invention relates to an LED (Light-Emitting Diode) package structure and an LED stereo display device. The LED package structure comprises LED chips, a package body and an optical element, wherein the package body encloses the LED chips, and the optical element is arranged on the package body. A light beam emitted by the LED chip passes through the optical element and is divided into a plurality of sub-light beams, and each sub-light beam is respectively projected to an image plane corresponding to the optical element. Therefore, the LED package structure can be applied to the LED stereo display device, so that the left and right eyes of an observer can respectively receive light beams emitted by different LED chips and see the stereo image, thus the problem of the existing stereo display device that the stereo image can only be seen in a single visual area can be solved.