The invention discloses a large-size intelligentized navigation mark revolving modulator and a control method. The revolving modulator comprises a lamp body (1) and a controller (2), wherein a step motor (9) is mounted on the lower portion of a central strut (4) on a chassis (3) of the lamp body (1) to drive a rotary shaft (11) to rotate through a coupling (10), a lens cage (13) is connected withthe rotary shaft (11) by a lower tray (14), the upper end of the central strut (4) is provided with a lamp changer base (18), a lamp changer (19) and a lamp (20), the controller (2) is composed of a control unit capable of providing the rotary control over modulators, controlling the modulator rotate-speed adjustment process and the luminescence, providing the automatic lamp changing control and the automatic control of communication modes. The modulator relates to the large-size intelligentized navigation mark revolving modulator which has the advantages of high intelligentized degree, simple structure, low energy consumption, far jet distance and convenient transport, installation and maintenance.