A photothermographic material comprising, on one side of a support, at least one kind of photosensitive silver halide, a light insensitive silver salt of an organic acid, a reducing agent for silver ions and a binder, wherein the photosensitive silver halide has a mean grain size of 0.001 &mgr;m to 0.06 &mgr;m and the material comprises at least two kinds of organic polyhalogenated compounds at least one of which is an organic polyhalogenated compound represented by the following formula (1): wherein Z1 and Z2 independently represent a halogen atom, X1 represents a hydrogen atom or an electron withdrawing group, Y1 represents —CO— group or —SO2— group, Q represents an arylene group or a divalent heterocyclic group, L represents a bridging group, W1 and W2 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, and n represents 0 or 1.