The invention discloses a distributed photovoltaic power generation device. The distributed photovoltaic power generation device includes a photovoltaic panel, a photovoltaic support plate, a protection plate, two sliding grooves, electronic sliding blocks, a strip-shaped brush, a front upright rod, a rear threaded retractable rod, a horizontal support plate and an automatic sun seeker; the photovoltaic panel is arranged on the photovoltaic support plate, the photovoltaic support plate is obliquely arranged on the horizontal support plate by being hinged to the upper end of the front upright rod and the upper end of the rear threaded retractable rod separately, the sliding grooves are symmetrically formed in the photovoltaic support plate in parallel, the electronic sliding blocks are arranged in the sliding grooves respectively, the protection plate is connected with the electronic sliding blocks through the lower end face of the protection plate to be arranged on the photovoltaic support plate, the strip-shaped brush is arranged at the side, perpendicular to the length direction of the sliding grooves, of the lower end face of the protection plate, and the automatic sun seeker isarranged under the horizontal support plate. The distributed photovoltaic power generation device is simple and novel in structure, the inclination angle and sun-facing rotation angle of the photovoltaic panel can be adjusted, the maximum utilization ratio of sunlight is ensured, and cleanness of the sun-facing face of the photovoltaic panel can also be maintained.