The present invention provides an indoor plant microbial fuel cell comprising: a basin havinga side wall and a bottom portion, the side wall surrounds the bottom and is in close contact with the bottom portion, the side wall and the bottom define an accommodation space； the liquid layer is disposed on the bottom of the basin body and is accommodated in the accommodating space thereof； the microbial fuel cell assembly, The invention has an anode unit, a cathode unit, a microbial unit and an external circuit, wherein the anode unit, the cathode unit and the microbial unit are disposed below a liquid level of the liquid layer； the external circuit comprises a load unit and two wires, wherein one of the wires is connected by the anode unit To the load unit, and the other of the wires is connected to the cathode unit by the load unit； and the microorganism unit decomposes the substrate to supply electrons to the anode unit； and the plant unit is disposed on the bottom portion and at least partially disposed on the liquid layer Hereinafter, metabolites are supplied to promote the growth of microbial units.本創作係提供一種室內植物微生物燃料電池，其包含：盆體，具有至少一側壁及一底部，側壁環繞底部且與底部密合，側壁及底部界定出容置空間；液體層，設置於盆體的底部上且容置於其容置空間中；微生物燃料電池組件，具有陽極單元、陰極單元、微生物單元及外部電路，其中陽極單元、陰極單元及微生物單元設置於液體層的液面以下；外部電路包含負載單元及兩導線，其中導線的其中之一由陽極單元連接至負載單元，而導線的其中另一由負載單元連接至陰極單元；以及微生物單元分解基質以供應電子至陽極單元；以及植物單元，設置於該底部上，且至少部分設置於液體層的液面以下，供應代謝產物以促進微生物單元生長。
