The present invention relates to a composition for preparing a silicon carbide porous body and a silicon carbide porous body using the same, and more particularly, to a silicon carbide (SiC) particle; And a necking agent that binds said silicon carbide (SiC) particles, wherein said necking agent is an inorganic sludge; And a seed which induces crack deflection or an inorganic substance which generates the seed and which has excellent heat resistance and heat resistance and is capable of being heat treated (sintered) at a low temperature in an oxygen atmosphere A composition for producing a silicon porous body and a silicon carbide porous body using the same are provided.;Silicon carbide, honeycomb, segment, filter, necklace agent
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