The utility model provides a gaseous ratio mixing arrangement of many units, circumference 120 is spared the three defeated air inlet hole of cloth and is included that air inlet hole A is failed to the valve body, air inlet hole is failed to balanced air valve body and air inlet hole B is failed to the valve body on the section of thick bamboo wall of valve body, and built -in dilution gas valve element and balance gas valve element have two diameters to fail air inlet hole A and the defeated air inlet hole B of case for D2's case on the dilution gas valve element, and balance gas valve element upward opens the defeated air inlet hole of the balanced gas valve element who has a diameter to be D1, through the position of adjusting dilutent gas valve element and balanced gas valve element, can change the defeated air inlet hole A of valve opening case, the defeated air inlet hole of balanced gas valve element and the defeated air inlet hole B of case and the defeated air inlet hole A of defeated air inlet hole valve body, the defeated air inlet hole of balanced air valve body, the defeated air inlet hole B's of valve body gas valve element 0 to the gaseous flow of continuous adjustment input, can realize the device of the gaseous ratio of ternary and binary simultaneously, can realize the ratio and accomplish in a device with mixing, ratio proportion continuously adjustable, but manual regulation and automatically regulated, export flow range is wide.