The invention provides a distributed multifunctional organic matter gasification and pyrolysis energy supply device and method. The distributed multifunctional organic matter gasification and pyrolysis energy supply device comprises a gasification combustion device, a sealed type feeding device, an ash discharging device, a gas purifying device, a combustible gas condenser, a combustible gas collecting device, a combustion power generating device, a gas waste heat recovery device and a storage battery. Compared with traditional combustion energy supplied power generating manners, the distributed multifunctional organic matter gasification and pyrolysis energy supply device is easy to miniaturize, high in raw material adaptability and low in requirements of moisture content, thereby savingpowdering and pelletizing of raw materials and greatly reducing the power generation cost; a pyrolysis and gasification process reduces process energy consumption to a maximum degree, and meanwhile achieves self-cleaning properties with low pollutant emission and almost no tar production, thereby greatly increasing the equipment reliability; a spiral pushing device can precisely control the retaining time of organic matters in a pyrolysis and gasification section by controlling the frequency to provide convenience for the entire reaction.