The invention relates to the communication field and aims to provide a directional distributed antenna. The directional distributed antenna comprises an antenna casing and a radiator arranged in the antenna casing and further comprises a worm gear of which an upper end is provided with a fixing seat, a rotation seat of which an upper end is provided with a rotation shaft pivoted with the worm gear, a fixing block arranged at the upper end of the rotation seat, a worm which is pivoted with the fixing block and is engaged with the worm gear, a rotation driving motor connected with the rotation seat, an inclination angle swing shaft arranged at an upper end of the antenna casing, and an inclination angle adjusting device, wherein an output shaft of the rotation driving motor is connected with one end of the worm, and an upper end of the inclination angle swing shaft is hinged with a lower end of the rotation seat. The directional distributed antenna is advantaged in that a signal coverage scope is convenient to adjust.