The invention discloses a PSD feedback-based two dimensional rapid control reflector and a control system thereof. The reflector comprises a pedestal, a PSD feedback optical path structure fixed on the pedestal, a movable support structure with piezoelectric ceramics, a fixed support structure without piezoelectric ceramics, a support connected with the movable support structure and the fixed support structure, and a reflector body fixed on the support. According to the invention, the feedback optical path structure based on a position sensing detector PSD is integrated, so deflection precision of angles of the reflector is improved; via the triangular support structure, it is ensured that while reflector can deflect in two dimensions, space utilization rate of the structure is greatly increased; and the structure of the reflector is quite compact and proper.