The invention discloses a method and system for receiving and playing boot video advertisements of digital television set-top boxes, and belongs to the technical field of interactive digital television set-top boxes. According to the method, firstly, a front-end advertisement service management server sends boot video advertisement files to a front-end boot video advertisement broadcasting server, the front-end boot video advertisement broadcasting server broadcasts the boot video advertisement files at designated frequency points of digital television networks, after the digital television set-top boxes are powered up and started up, related initialization is conducted, in the initialization process, the boot video advertisement files are received at designated frequency points, and after the boot video advertisement files are received, the digital television set-top boxes play the boot video advertisements. The method and system give full play to the advantages such as large bandwidth resources and bandwidth guarantee of a digital television network broadcast channel, broadcast the boot video advertisement files at a higher rate, and can complete receiving of the boot video advertisement files in a short time at the starting-up state of the set-top boxes, and meanwhile the number of the set-top boxes for receiving the boot video advertisement files is not limited.