Ventilated sun louver and glass curtain wall with functions of ventilation and sunshading

The invention discloses a ventilated sun louver and a glass curtain wall with the functions of ventilation and sunshading, and belongs to the technical field of glass curtain walls. The multi-functional glass curtain wall comprises a glass curtain wall, a ventilation heat transfer structure and the ventilated sun louver, wherein the ventilated sun louver is arranged on the inner side of the glasscurtain wall and is collapsible. When the ventilated sun louver is unfolded, an interlayer is formed between the ventilated sun louver and the glass curtain wall, the interlayer communicates with an air inlet opening of the ventilation heat transfer structure under the interlayer. The ventilated sun louver comprises a plurality of hollow boards, wherein the hollow boards are arranged in the vertical direction and are connected by hinges. Functional membranes are arranged on the outer sides of the hollow boards, and a hollow channel with air flows downward is formed in each hollow board. Each hollow channel communicate