The invention discloses a virtual reality technology based image refreshing method and device. The method comprises the following steps: determining a first area and a second area on a display screen according to the positions state variation information while the position state of a terminal device varies; refreshing an image of the first area through the data of an old image displayed on the display screen under the previous positions state; acquiring new image data based on the position state variation information; refreshing the image of the second area. According to the method and the device, the first area in which the image content of the display screen does not vary is determined on the display screen when the position state of the terminal device varies, and the image of the first area is directly refreshed through the old image data, so that the processes of re-counting to obtain new image data and transmitting data can be saved, and as a result, the calculating workload and the transmitting workload can be greatly decreased; the image refreshing speed is increased; the time that a user waits for refreshing the image is reduced; the sense of reality of the image is improved; the dizzy feeling is reduced or removed.