The invention discloses an intelligent office light regulation system. A control unit acquires the opening time T0 of a target office through an information acquisition unit, the current time Tn through a timing unit, the outdoor light brightness L0 through a first acquisition unit and the light brightness L of the target office through a second acquisition unit, and makes a window regulating unit and a curtain regulating unit act according to a T0-Tn relation instruction and makes a light regulating unit act according to an L0-L relation instruction. According to the invention, the opening time of the target office is acquired first, and the light brightness in the target office is regulated in advance within a preset time before the opening time, so that users can enjoy light of suitable brightness immediately after they enter the target office. The user experience is improved, and intelligent regulation of light in an office is realized.