The utility model discloses a gesture recognition's three -dimensional experience system of VR, including ray receiver unit, gesture initial condition unit and gesture positioning unit, wherein gesture positioning unit includes the discernment and applied unit of hand gesture information collection and analytic unit and gesture, and the ray receiver unit includes ray receiver, and hand gesture information gathers and includes the structured light projector, smooth flight time sensor and polygonal formation of image camera with the analytic unit. The utility model discloses can directly obtainthe hand at the three -dimensional information in space and the motion information of finger, distinguishable gesture kind is many, can go on discerning in real time, and is simple to use, the operation is comfortable, the drive wide range, and data quality is high, is applicable to a great deal of field.