Disclosed is a device for refining and aroma extraction of tea leaves, comprising a tunnel type housing provided with a tea leaves inlet and a tea leaves outlet respectively at the ends thereof, and a conveyer belt provided in the tunnel type housing and able to convey tea leaves from the tea leaves inlet to the tea leaves outlet. The tunnel type housing is provided with an air inlet and an air discharge machine. The tunnel type housing is provided with at least one of a magnetron and an electric heating plate. Further disclosed is a method for refining and aroma extraction of tea leaves, comprising microwave refining of tea leaves followed by infrared aroma extraction, or infrared aroma extraction followed by microwave refining, or simultaneous microwave refining and infrared aroma extraction. The production method is simple and more practical.