The present invention relates to a method for producing a porous silicon carbide sintered body that can be used as a material for a silicon carbide honeycomb filter, which is either one of an alpha type silicon carbide (α-SiC) powder or a beta type silicon carbide (β-SiC) powder or To 100% by weight of the mixed powder obtained by mixing these, 0.3 to 0.5% by weight of aluminum boride (AlB 2 ) was extrapolated with a sintering agent, and 2-3% by weight of polyvinyl butyral (PVB) was added as a molding aid, followed by alcohol medium. After mixing sufficiently in and drying to obtain a molded powder, the molded powder is composed of sintering at 2000-2200 ° C. in an argon atmosphere.;Silicon Carbide Ceramics, Honeycomb Filter, Porous
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