A planographic printing plate precursor comprising: a support; and an image recording layer on the support, wherein the image recording layer contains an infrared absorbing agent, an electron-accepting polymerization initiator, and a polymerizable compound, the infrared absorbing agent is a cyanine coloring agent represented by Formula 1-2, in Formula 1-2, R 1 represents a group represented by Formula 2, R 2 and R 3 each independently represent a hydrogen atom or an alkyl group, R 2 and R 3 may be linked to each other to form a ring, Ar 1 and Ar 2 each independently represent a group forming a benzene ring or a naphthalene ring, Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, -NR 0 -, or a dialkylmethylene group, R 0 represents a hydrogen atom, an alkyl group, or an aryl group, R 4 and R 5 each independently represent an alkyl group, a -CO 2 M group, or a -PO 3 M 2 group, M represents a hydrogen atom, a sodium atom, a potassium atom, or an onium group, R 6 to R 9 each independently represent a hydrogen atom or an alkyl group, L represents an oxygen atom, a sulfur atom, or -NR 10 -, R 10 represents a hydrogen atom, an alkyl group, or an aryl group, and Za represents a counter ion that neutralizes an electric charge, in Formula 2, R Z represents an alkyl group, and a wavy line represent a bonding site with respect to a group represented by L in Formula 1-2, and the electron-accepting polymerization initiator is characterized by comprising a compound represented by the following Formula: wherein X represents a halogen atom; and R 3 represents a substituted or unsubstituted aryl group. a support; and an image recording layer on the support, wherein the image recording layer contains an infrared absorbing agent, an electron-accepting polymerization initiator, and a polymerizable compound, the infrared absorbing agent is a cyanine coloring agent represented by Formula 1-2, in Formula 1-2, R 1 represents a group represented by Formula 2, R 2 and R 3 each independently represent a hydrogen atom or an alkyl group, R 2 and R 3 may be linked to each other to form a ring, Ar 1 and Ar 2 each independently represent a group forming a benzene ring or a naphthalene ring, Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, -NR 0 -, or a dialkylmethylene group, R 0 represents a hydrogen atom, an alkyl group, or an aryl group, R 4 and R 5 each independently represent an alkyl group, a -CO 2 M group, or a -PO 3 M 2 group, M represents a hydrogen atom, a sodium atom, a potassium atom, or an onium group, R 6 to R 9 each independently represent a hydrogen atom or an alkyl group, L represents an oxygen atom, a sulfur atom, or -NR 10 -, R 10 represents a hydrogen atom, an alkyl group, or an aryl group, and Za represents a counter ion that neutralizes an electric charge, in Formula 2, R Z represents an alkyl group, and a wavy line represent a bonding site with respect to a group represented by L in Formula 1-2, and the electron-accepting polymerization initiator is characterized by comprising a compound represented by the following Formula: wherein X represents a halogen atom; and R 3 represents a substituted or unsubstituted aryl group.