The present invention relates to a grain tea bag manufacturing method and a grain tea bag manufactured by the grain tea bag manufacturing method. The grain tea bag manufacturing method includes: step S10 in which air in a drum is preheated to a reference temperature by heating a furnace that accommodates the drum through which the air passes step S20 in which grains are put into the drum once the air in the drum is preheated to the reference temperature step S30 in which the air in the furnace is heated by heating the furnace and the grains are indirectly heated and roasted by the heated air passing through the drum step S40 in which the roasted grains are discharged and cooled step S50 in which the cooled grains are discharged and ground and step S60 in which the tea bag packaging is performed by the ground grains being put into a tea bag packaging hopper by a predetermined amount at a time and sealing being performed. According to an embodiment of the present invention, the grains are roasted by hot air-based heating, and thus the deep taste and rich flavor of the grains can be kept intact for product quality improvement. In addition, the present invention uses only a domestically-produced agricultural product as its main raw material, and thus can contribute to the consumption of the domestically-produced agricultural product. Furthermore, the present invention realizes a unique functional beverage for beverage market improvement and can contribute to the promotion of health based on the effect of the grains. Moreover, the present invention is highly practical because the grain tea bag can be conveniently taken in and carried around and the marketability can be improved because the product has the sincerity of the product maker and attractive design with which the elegance unique to South Korea can be felt.COPYRIGHT KIPO 2017본 발명은 공기가 통과되는 드럼을 수용하는 노를 가열하여 상기 드럼 내의 공기를 기준온도로 예열하는 S10단계와, 상기 드럼 내의 공기가 기준 온도로 예열되면 상기 드럼 내부에 곡물을 투입하는 S20단계와, 상기 노를 가열하여 상기 노 내의 공기를 가
