The invention provides a radio frequency front end device. According to the radio frequency front end device, a first band signal transmitter pin of a first radio frequency transceiver, a first PA (Power Amplifier), a first bandpass filter and a first end of a first switch are connected in sequence. A first band primary signal receiver pin, a second band diversity signal receiver pin and a first double-filter are connected. The first double-filter is connected with a second end of the first switch. The control end of the first switch, a first radio frequency connector and a first antenna are connected in sequence. A second band signal transmitter pin, a second PA, a second bandpass filter and a first end of a second switch are connected in sequence. A second band primary signal receiver pin, a first band diversity signal receiver pin and a second double-filter are connected. The second double-filter is connected with a second end of the second switch. The control end of the second switch, a second radio frequency connector and a second antenna are connected in sequence. According to the radio frequency front end device, a layout area of a PCB and design complexity can be reduced.