A mobile Virtual Reality (VR) system includes a display unit, a sensing unit, a photographing unit and a VR application. The sensing unit senses a physical movement variation of the mobile VR system. The photographing unit photographs environment to generate a photograph image. Based on the physical movement variation of the mobile VR system from the sensing unit and the photograph image from the photographing unit, the VR application determines a movement status of the mobile VR system to adjust a VR display image on the display unit.
