The present disclosure provides a 3D display device and a working method of the same, the 3D display device includes a display panel, a lens unit, an acquiring component and an adjusting component, the acquiring component is configured to acquire current positions of eyes of a viewer, and the adjusting component is configured to adjust a signal for driving the display panel according to the current positions so that display information of the display panel received by the eyes of the viewer at the current positions is the same as display information of the display panel received by the eyes of the viewer at preset positions.