Photothermographic material

A photothermographic material comprising a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a reducing agent for silver ions and a binder on one surface of a support, wherein the photothermographic material contains, as the reducing agent, at least one compound represented by the following formula (I):

• wherein R1 and R1′ each independently represent an alkyl group, at least one of which is a secondary or tertiary alkyl group;
• R2 and R2′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring;
• L represents —S— group or a —CH(R3)— group where R3 represents hydrogen atom or an alkyl group;
• and X and X′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring, and at least one compound represented by the following formula (A):
• wherein Q represents an alkyl group, an aryl group or a heterocyclic group;
• X1 and X2 each independently represent a halogen atom;
• Z represents hydrogen atom or an electron withdrawing group;
• Y represents —C(═O)—, —SO— or —SO2;
• and m represents 0 or 1, which has a melting point not lower than a heat development temperature for the photothermographic material by more than 10° C. but not higher than the heat development temperature by more than 55° C.