<p>Provided is a fluid leakage inhibitor (2) having high water absorption performance, which has superior fluidity and can be loaded into the body cavity of a corpse with a light force when loaded using a tool (1). The fluid leakage inhibitor (2) has a water-absorbent resin dispersed in a viscous fluid base material including at least one selected from the group consisting of an alcohol, an ether, and an ester, and contains a partially neutralized product of polyacrylic acid as a dispersion stabilizer for the water-absorbent resin.</p>
