The invention relates to a radio remote unit of an electrically adjustable antenna, which is characterized in that the radio remote unit comprises a physical interface circuit, an intermediate frequency processing circuit, an A/D and D/A conversion circuit, a frequency conversion circuit, a synthesis/distribution network, a controllable phase shifter and a transceiving module, downlink signals sequentially pass through the physical interface circuit, the intermediate frequency processing circuit, the A/D and D/A conversion circuit, the frequency conversion circuit, the synthesis/distribution network, the controllable phase shifter an the transceiving module, and uplink signals sequentially pass through the transceiving module, the controllable phase shifter, the synthesis/distribution network, the frequency conversion circuit, the A/D and D/A conversion circuit, the intermediate frequency processing circuit and the physical interface circuit. The radio remote unit has the advantages of compact structure, simple installation, low power consumption and high performance. The invention further relates to the electrically adjustable antenna integrating the radio remote unit, which comprises the radio remote unit RRU and an antenna part and is characterized in that all or part of the functions of the radio remote unit RRU are integrated in the electrically adjustable antenna. The electrically adjustable antenna integrates all or part of the functions of the RRU, thereby leading the overall performance to be more excellent and leading the installation to be simpler.