The invention provides a virtual reality projection imaging method and system. The method mainly includes the steps that a projector is installed in a set distance range of 3D glasses, wherein the projection direction of the projector is consistent with the visual direction of the 3D glasses; the projector is connected with a computer processing system through an information transmission system, a virtual reaction scene video transmitted by the computer processing system is received by the information transmission system, and the received virtual reality scene video is projected on a display space. Images can be projected at any projection angle in a projection area in any shape without deformation or distortion. Definition is improved, image granular sensation is reduced, the weight is low, an experiencer feels more comfortable and natural, and the imaging effect is good.