Projection screen image display method and display equipment

The invention provides a projection screen image display method and display equipment. The display equipment can be rotary display equipment or non-rotary display equipment. The method comprises the steps: after the display equipment receives the screen projection image sent by the mobile terminal, keeping the display state of the display unchanged or driving the display to rotate to the corresponding display state according to the real image size of the screen projection image and the current display state of the display, so that the picture format of the screen projection image is matched; according to the real image size and the display state of the display, calculating the zoom multiple of the projection screen image; and finally, adjusting the display size of the projection screen image on the display according to the zoom multiple. According to the technical scheme, no matter whether the display device is rotatable or not, the projection screen image displayed on the display device can be zoomed to the