The utility model relates to a just throw virtual image display system belongs to optics and makes technical field. The utility model discloses a just throw virtual image display system, wherein, planar mirror, projector and just throwing the screen at the homonymy of sphere collimation speculum, position relation is in proper order for sphere collimation speculum, planar mirror, just throw screen, projector, it places in sphere collimation speculum one time focus department just to throw the screen, light that the projector throwed out through planar mirror reflection back -lit on just throwing the screen, light throws on sphere collimation speculum through just throwing screen reflection back, the department becomes the just upright enlarged virtual image at the eyespot, the eyespot is located outside the one time focus. System manufacturing cycle is short, and is with low costs, and space utilization is high, and the folding back shared space of the light path length of light path reduces 30% operation requirement that can satisfy field collimation virtual image display such as flight simulation, scientific research, amusement.