Disclosed are a portable carrier stores a mouse setting data and a mouse device. The mouse device includes a data receiver, a data receiver, an operation interface and a processor. The data receiver receives a mouse setting data. The operation interface includes a plurality of user-operated units. The processor is connected to the data receiver, the memory unit and the operation interface. The processor sets the functions of the mouse device according to the mouse setting data, and stores the mouse setting data in the memory unit. Each of the functions of the mouse device corresponds to each of the user-operated units of the operation interface.