Method and device for transmitting picture

The invention discloses a method and a device for transmitting a picture, which is used for improving the display effect of the picture. The method comprises the steps of receiving a picture corresponding to a first resolution ratio transmitted by a movable terminal; transmitting a request of obtaining the picture to a server in accordance with an identifier of the picture; and receiving the picture corresponding to the second resolution ratio sent by the server, wherein the second resolution ratio is greater than the first resolution ratio.