Live broadcast data transmission method and device, electronic device, server and storage medium

The embodiment of the invention provides a live broadcast data transmission method and device, an electronic device, a server and a storage medium. The live broadcast data transmission method comprises the following steps: obtaining first private data to be sent; adding the first private data to a target data unit; adding the target data unit which is added the first private data to the video datathat is encoded completely, wherein the video data is made up of video coding units; sending the video data to the server; and forwarding the video data to a playing end by the server, so that the playing end can obtain the first private data while obtaining the video data. The first private data is loaded in the target data unit, which belongs to the video coding unit of the video data coding compression level; the transmission of the first private data is not limited by the data transfer protocol between the anchor end and server or among the playing ends, therefore, the application environment for transmitting the