The air outlet regulating valve is a multi blade open regulating valve, often used in conjunction with double-layer grille air outlets, single-layer grille air outlets, and other air outlets to regulate the airflow distribution of the entire air conditioning system, thereby achieving the ideal airflow distribution. Its structure adopts a linkage type between each blade. As long as one blade is pulled, all blades can move, making the neck ventilation area of the air outlet larger or smaller. The regulating valve is installed in conjunction with the air outlet using riveting method, and in actual production, the valve size is smaller than the specifications of the air outlet.