A wireless communication system includes a number of peripheral devices, a wireless communication device, and a terminal. The wireless communication device includes a first communication module and a second communication module. The second communication module includes a host unit and a device unit. The host unit is used to be wirelessly connected to the peripheral devices. The terminal supports the first communication protocol is used to connect to the first communication module, and the terminal supports the second communication protocol is used to connect to the second communication module via the device unit thereof. A method using the wireless communication system is also provided.