To perfectly prevent the reaction of a solvent dissolving the residue of a core and the core with a compacted body in the method for producing a hollow sintered body.

As for a method for producing a hollow sintered body, (1) a core 10 of the material in which, in the case of being formed into the liq. or gas from the solid, cubical expansion does not occur in the solid state is used, metal powder 30 is filled into the space between the core 10 and a die body 20 under pressure to form a compacted body, the core 10 in the solid state is separated from the compacted body by forming its state into the liq. or gaseous state, and the compacted gody is subjected to heat treatment to form a hollow sintered body; (2) a core 10 is formed by ice obtd. by freezing water or the one essentially consisting of water, metal powder 30 is filled into the space between the core 10 and a die body 20 under pressure to form a compacted body, the core 10 is melted and separated from the compacted body, and thereafter, the compacted body is subjected to heat treatment to form a hollow sintered body.