The disclosed technology provides a game assistance system which allows a game helper to select audio data corresponding to game judgments and a game progress and allow the selected audio data to be output through a stadium speaker, and comprises: an information storage unit for storing game progress information; a signal receiving unit for receiving a game progress request signal from a game helper terminal; a control unit for selecting in the information storage unit the game progress information corresponding to the game progress request signal; and a signal transmission unit for transmitting the selected game progress information to the game helper terminal.