<p>An image displaying method and its device are provided. The method include: receiving the parameters of source image and the parameters of target background for displaying source image; and computering equiratio scaling parameter of the source image and corresponding position of the source image in the target background according to the parameters of source image and the parameters of target background; zooming the source image according to the equiratio scaling parameter; outputting a picture by combining the source image that has been zoomed according to the corresponding position of the source image in the target background.</p>
