A communication device is provided. The communication device includes a circuit board, a connector and a RF noise shield. The connector is disposed on the circuit board for being connected with an external connector on a docking side of the connector. The RF noise shield is disposed on the circuit board and configured to cover and be separated from the connector by a spacing. The RF noise shield further has an opening arranged on the docking side. The opening is arranged on a side of the RF noise shield facing the external device, such that the RF noise shield forms an absorptive/reflective cavity. When the external device approaches or connects, not only the RF noise radiated from the connector of the external device but also the RF noise radiated from the connector of the device itself may be absorbed and/or reflected through the absorptive/reflective cavity.