The pneumatic regulating ball valve has the advantages of large rated flow coefficient, large adjustable proportion, superior sealing performance, compact structure, small volume, vertical and horizontal installation, etc. It is applicable to the control of gas, liquid and solid granular media As there is no clearance between the valve core and the valve seat, it has great shear force and self-cleaning performance, especially suitable for the control of suspensions and solid particles containing fiber or small solid particles. Therefore, this product is widely used in petroleum, chemical, electric power, paper making, metallurgy and other industries.