A kind of manufacturing method of nanometer coffee carbon powder, this method comprises: A, offer coffee waste (coffee grounds) are material; B, this material at high temperature is carbonized as coffee carbon; C, coffee carbon is handled by nanometer science and technology, becomes nanometer coffee carbon powder.一種奈米咖啡碳粉之製造方法,該方法包括:A、提供咖啡廢棄物(咖啡渣)為材料;B、將此材料高溫碳化為咖啡碳;C、經過奈米科技處理咖啡碳,使其成為奈米咖啡碳粉。