The invention discloses a method for using a sound prop, a server and a client side thereof. The method comprises the steps as follows: the current mood index of the user is obtained; a corresponding sound file mark is searched according to the current mood index of the user and the sound prop used by the user; and the client side of relative user is indicated to play a corresponding sound file according to the sound file mark. The server comprises an obtaining module, a searching module and an indicating module. The client side comprises a sending module and a responding module. The embodiment of the invention searches and plays the sound file corresponding to the mood index and the sound prop by obtaining the mood index of the user when the user uses the sound prop, plays different sound files according to different moods of the user, ensures that the user can express the mood by the sound prop exactly and enhances the interactivity and the entertaining of a network game.