Disclosed are a prefabrication data transmission method and apparatus, and an electronic device. The method comprises the following steps: step 1), selecting prefabrication data; step 2), a calling party sending the selected prefabrication data to a called party, and forcing the called party to download the selected prefabrication data; step 3), the calling party initiating a dialing request to the called party according to an intention of a user; and step 4) the called party displaying the prefabrication data before making an answering or rejecting response. Provided is a method for downloading and playing a video, an image or characters preset by the other party before an official call between communication devices, particularly a calling party which is an iOS device and a called party which is an Android device. On the premise of zero network type restrictions, both the calling party and the called party can download and watch the video, audio, image or characters set by the other party.