The invention discloses a multi-group high-speed airflow type blow-drying machine for an automated assembly line. The multi-group high-seed airflow type blow-drying machine comprises a rack, a sealing door and fans. A multi-hole type wind gap is fixedly formed in one end of each fan. The fans are fixed to the rack. Wind outlet nozzles and PET bottle covers are fixedly arranged on the rack. Wind outlets of the wind outlet nozzles extend into the PET bottle covers. According to the multi-group high-speed airflow type blow-drying machine, the multiple groups of fans are adopted, so that the work efficiency of the blow-drying machine is improved, and the blow-drying quality is improved; PET bottles are covered with the PET bottle covers, and it is avoided that the PET bottles are polluted in the blow-drying machine; and the wind nozzles extend into the PET bottle covers and blow-dries the PET bottles, the PET bottle covers are mutually connected through a pipeline, and the mutual series flow of the airflow is achieved, so that the energy consumption of the equipment is lowered.