The invention discloses a method used for transmitting data and image, including that a communication link is established; after carrying through packing on the collected data and image, a transmitting terminal puts the data and image into a data packet array and an image packet array; the data packet in the data packet array and the image packet in the image packet array are across transmitted by the communication link. The invention also simultaneously discloses a device used for transmitting data and image. In the invention, the transmitting terminal respectively carries through packing on the data and image according to a protocol engaged with a receiving terminal and then transmits the data and image on the same communication link that is set up in advance in a mixed way without needing to adopt two independent communication links to transmit the data and image respectively, so as to improve the operating factor on the communication link, thus saving the construction cost and reducing the operation cost.