Bluetooth data transmission method and bluetooth device

The invention discloses a bluetooth data transmission method and a bluetooth device. The method comprises the steps that the connection with terminal equipment which supports a bluetooth 2.0 protocol is established, and first data sent by the terminal equipment which supports the bluetooth 2.0 protocol are acquired; the connection with terminal equipment which supports a bluetooth 4.0 protocol is established, and second data sent by the terminal equipment which supports the bluetooth 4.0 protocol are acquired; the first data are sent to the terminal equipment which supports the bluetooth 4.0 protocol, or the second data are sent to the terminal equipment which supports the bluetooth 2.0 protocol. According to the bluetooth data transmission method and the bluetooth device, the system connecting modes of bluetooth 2.0 and bluetooth 4.0 are compatible, and bluetooth 2.0 equipment and bluetooth 4.0 equipment can transmit the data.