The invention provides an organic material retorting cracking and gasifying furnace, which comprises a cracking and gasifying furnace body, a plurality of retorting chambers and an electric heating rod, wherein a feed inlet and a gas outlet are formed in the cracking and gasifying furnace body; the plurality of retorting chambers are arranged in the cracking and gasifying furnace body side by side, and every two adjacent retorting chambers are isolated, and a material discharge outlet is formed in the bottom of each retorting chamber; the electric heating rod is vertically arranged in the plurality of retorting chambers to perform air-isolated retorting to materials in the plurality of retorting chambers so as to generate a solid carbon material and retorting gas. According to the organic material retorting cracking and gasifying furnace provided by the embodiment of the invention, the existing organic materials such as garbage and low-rank coal can be furthest utilized without pollution, and the organic materials can be utilized to the greatest extent. In addition, the invention further provides an organic material treatment method.