Solar hot gas flow power generation system

The utility model provides a solar hot gas flow power generation system, which comprises a heat collection shed, a chimney base, a chimney, a wind generating set, a wind guide wall, and a wind stopping wall. The heat collection shed also comprises a lighting plate and a lighting plate upright post; the lighting plate also comprises a lighting vertical plate and a lighting plate inclined plate, and the lighting vertical plate is hinged with the lighting inclined plate through a lighting plate hinge and is closed with the lighting inclined plate in virtue of gravity sagging; the chimney base comprises a rotating mechanism at the upper part and a base upright post at the lower part, and the wind generating set is arranged inside the chimney base; the rotating mechanism is connected with the chimney, and the chimney can rotate according to the natural wind direction to adjust the area of a windward side and reduce wind resistance; the wind guide wall reaches the top of the heat collection shed in the height direction and extends to the edge of the heat collection shed in the length direction; and one side of the wind stopping wall is hinged on the base upright post. When sunlight is insufficient, the wind stopping wall on the windward side is opened and the wind stopping wall on the leeward side is closed, power generation is conducted by using natural wind, and when rainwater forms a water flow, the wind stopping wall can be thrust aside for automatic cleaning.