PURPOSE: To obtain a heat-sensitive recording body with neither fog of the base skin part caused by a plasticizer or an oil nor rustrous discoloring generated with time by incorporating a specified color developer, a specified storage stabilizer and a specified reaction accelerator by combining them.

CONSTITUTION: In a heat-sensitive recording layer, at least one of bis-(3-allyl-4- hydroxyphenyl) sulfone, 4-hydroxy-4'-isoproxydiphenyl surfone and 2,2-(4,4- hydroxyphenyl) sulfone is incorporated as a color developer, and 4-(2- methylglycidyloxy)-4'-benzyloxydiphenyl sulfone as a storage stabilizer, and at least one of 3-(N-salicyioyl)amino1,2,4-triazole or sodium-2,2-methylenebis(4,6- di-tert. butylphenyl)phosphate as a reaction accelerator are incorporated in parallel. This heat-sensitive recording body exhibits excellent storage stability on its recording part.