Radio frequency remote device

The present utility model discloses a radio frequency remote device which is applied to a wireless communication system. A detection interface is arranged, and signals of an antenna feed interface are coupled to the detection interface through a coupler. During the detecting process, a problem that whether the radio frequency remote device has faults or not is directly judged through detection of the detection interface, the detection is more convenient, an antenna feed cable does not need to be cut during the working process of equipment, no attenuator needs to be added additionally, the radio frequency remote device does not need to be dismounted, and maintenance difficulty and work amount can be reduced.