Virtual image distance adjusting mechanism and near-eye display

The invention discloses a virtual image distance adjusting mechanism and a near-to-eye display, the virtual image distance adjusting mechanism comprises a display screen mounting bracket, an optical lens group mounting bracket, a rotating bracket and two fixing blocks, the rotating bracket is rotatably arranged on the display screen mounting bracket and can rotate around a fixed rotating shaft; the rotating support comprises an arc-shaped support with a handle, two connecting supports and two arc-shaped threaded supports, and the two ends of the arc-shaped support are connected with the arc-shaped threaded supports through the connecting supports respectively; the arc-shaped threaded bracket and the arc-shaped bracket are arranged on a concentric circle taking the position of the rotating shaft as a circle center; an external thread is arranged on the outer side of the arc-shaped threaded bracket; the two fixed blocks are fixed on the optical lens group mounting bracket; the fixing block is provided with an a