Abstract: The present disclosure relates to a method for producing fermented green coffee beans and fermented green coffee beans produced thereby, the method including: (A) a step of freezing green coffee beans at ?10 to ?25° C.; (B) a step of immersing the frozen green coffee beans in water for 3 to 10 hours; (C) a step of taking out the green coffee beans immersed in the water, removing the water and leaving the beans to stand for 5 to 15 hours while supplying air at 20 to 30° C.; (D) a step of sterilizing the green coffee beans and then inoculating the same with a strain to anaerobically ferment the same; and (E) a step of sterilizing and then drying the anaerobically fermented green coffee beans. When the fermented green coffee beans are roasted into coffee beans, aroma and taste may be improved and odor may be removed.