The invention discloses an air spray deformation assembly for preparing super-imitation cotton polyester nylon air spray deformation combined filament yarn, which includes a nozzle core and a nozzle shell. A circular hole is arranged in the nozzle shell, the outer wall of the nozzle core is cylindrical, and an air spray nozzle ring cavity is formed in the ring gap between the nozzle core and the nozzle shell; a compressed air inlet is arranged on the nozzle shell; a nozzle core hole is positioned in the middle of the nozzle core, the lower end of the nozzle core hole is splayed and convergent,and the middle part of the nozzle core hole is cylindrical to form an air spray nozzle turbulence chamber; the upper end opening of the nozzle core hole is flared, and an air spray airflow jet microporous is arranged on the wall of the nozzle core hole. The assembly has the advantages that tows entering the air spray nozzle turbulence chamber are blew to be separated by formed supersonic multi-dimensional eddy current air spray turbulence airflow and violently move and rotate in the multi-dimensional eddy current air spray turbulence airflow. Then the tows are continuously vented from an eddycurrent and turbulence area together with eddy current jet airflow to form irregularly winding tangling mixed fiber, and the super-imitating cotton polyester nylon air spray deformation combined filament yarn is prepared.