A microbial fuel cell and a method of manufacturing the same are provided. The microbial fuel cell includes a cathode, an anode, and a microbial community. The anode is made of an activated carbon prepared from waste coffee ground as an electrode material, and the microbial community adheres to the surface of the activated carbon. Since the activated carbon prepared from waste coffee ground is beneficial for the adhesion of various microbial communities to form a biofilm, the electron transfer efficiency of the microbial fuel cell can be improved |