Pneumatic cigarette hardness measuring device

A rotating mechanism of the pneumatic cigarette hardness measuring device comprises a rotating disc, and a cigarette feeding station, a diameter change detecting station and a cigarette discharging station are arranged on the rotating disc. The air pressure mechanism comprises a plurality of air pressure assemblies, each air pressure assembly comprises a cigarette clamp, an air supply unit and a first cigarette diameter detection unit, and a cigarette containing hole, a pressure applying air hole and an exhaust air hole are formed in each cigarette clamp; the pushing mechanism is arranged corresponding to the cigarette feeding station and comprises a pushing channel and a pushing unit, and the pushing channel is communicated with a cigarette containing hole of a cigarette clamp of an air pressure assembly entering the cigarette feeding station. The pneumatic cigarette hardness measuring device disclosed by the invention can automatically and continuously detect the diameter change of the cigarettes in the air