Disclosed is a method for processing a multimedia broadcasting in a portable terminal having a navigation module, while a vehicle is being driven. The method includes steps of: proceeding to a vehicle driving mode, if it is recognized that the vehicle is currently being driven when the multimedia broadcasting data is outputted; confirming at least one vehicle driving function set as the vehicle driving mode in the vehicle driving mode and driving navigation module, and then acquiring vehicle driving information; and reflecting the acquired vehicle driving information in the vehicle driving function and then outputting the multimedia broadcasting data after applying the vehicle driving function to the multimedia broadcasting data.