The invention relates to the technical field of photovoltaic power generation, and discloses a distributed solar power generation device and system based on Internet of Things control, rotating frames are rotated by a certain angle by turning over a motor so as to obtain an optimal illumination angle, and meanwhile, a certain fixing effect is achieved on a rotating shaft and the plurality of rotating frames, so that the rotating shaft and the plurality of rotating frames can be fixed. A plurality of driving air cylinders are controlled to operate at the same time, so that a plurality of driving telescopic rods drive telescopic blocks to move in opposite directions, and then a plurality of extension frames are driven by a plurality of connecting blocks to extend towards one side from the lower part of a corresponding rotating frame under the guide action of corresponding guide columns and T-shaped sliding grooves; therefore, the multiple solar sailboards and the extension sailboard are fully exposed under illumination, more radiation energy is obtained in unit time, the solar energy obtaining rate is improved, compared with the prior art that multiple sailboards are vertically distributed, the daylighting influence among the multiple sailboards can be avoided, the overall height of the device can be reduced, and the high-altitude risk is reduced.