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, a polymerization initiator, and a core-shell particle, a core portion of the core-shell particle contains a resin A containing a functional group A, a shell portion of the core-shell particle contains a resin B containing a functional group B that is bondable to or interactable with the functional group A and a dispersion group, wherein the polymerization initiator includes an electron-donating polymerization initiator, wherein a difference between the highest occupied molecular orbital (HOMO) of the infrared absorbing agent and the HOMO of the electron-donating polymerization initiator is 0.70 eV or less, characterized in that the resin B has a constitutional unit containing the functional group B and represented by Formula b-1 or Formula a1: wherein in Formula b-1, X 1b represents -O-, OH, NR 3b, or NH 2, L 1b represents a divalent linking group having 1 to 20 carbon atoms, R 1b represents a carboxy group, a hydroxy group, or a glycidyl group, R 2b represents a hydrogen atom or a methyl group, and R 3b represents a hydrogen atom, an alkyl group, or an aryl group, and in a case where X 1b represents OH or NH 2, L 1b and R 1b may not be present accordingly, wherein in Formula a1, R A1 represents a hydrogen atom or an alkyl group, and wherein the resin B has a constitutional unit containing the dispersion group and represented by the following Formula b-3 or Formula b-4: wherein, in Formulae b-3 and b-4, L 2 represents an ethylene group or a propylene group, L 3 represents an alkylene group having 2 to 10 carbon atoms, L 4 represents an alkylene group having 1 to 10 carbon atoms, R 4 represents an alkyl group, or an aryl group, R 6 represent a hydrogen atom, an alkyl group, or an aryl group, R 5 and R 7 each independently represent a hydrogen atom or a methyl group, m1 represents an integer of 2 to 200, and m2 represents an integer of 2 to 20. a support; and an image recording layer on the support, wherein the image recording layer contains an infrared absorbing agent, a polymerization initiator, and a core-shell particle, a core portion of the core-shell particle contains a resin A containing a functional group A, a shell portion of the core-shell particle contains a resin B containing a functional group B that is bondable to or interactable with the functional group A and a dispersion group, wherein the polymerization initiator includes an electron-donating polymerization initiator, wherein a difference between the highest occupied molecular orbital (HOMO) of the infrared absorbing agent and the HOMO of the electron-donating polymerization initiator is 0.70 eV or less, characterized in that the resin B has a constitutional unit containing the functional group B and represented by Formula b-1 or Formula a1: wherein in Formula b-1, X 1b represents -O-, OH, NR 3b, or NH 2, L 1b represents a divalent linking group having 1 to 20 carbon atoms, R 1b represents a carboxy group, a hydroxy group, or a glycidyl group, R 2b represents a hydrogen atom or a methyl group, and R 3b represents a hydrogen atom, an alkyl group, or an aryl group, and in a case where X 1b represents OH or NH 2, L 1b and R 1b may not be present accordingly, X 1b represents -O-, OH, NR 3b, or NH 2, L 1b represents a divalent linking group having 1 to 20 carbon atoms, R 1b represents a carboxy group, a hydroxy group, or a glycidyl group, R 2b represents a hydrogen atom or a methyl group, and R 3b represents a hydrogen atom, an alkyl group, or an aryl group, and in a case where X 1b represents OH or NH 2, L 1b and R 1b may not be present accordingly, wherein in Formula a1, R A1 represents a hydrogen atom or an alkyl group, and wherein the resin B has a constitutional unit containing the dispersion group and represented by the following Formula b-3 or Formula b-4: wherein, in Formulae b-3 and b-4, L 2 represents an ethylene group or a propylene group, L 3 represents an alkylene group having 2 to 10 carbon atoms, L 4 represents an alkylene group having 1 to 10 carbon atoms, R 4 represents an alkyl group, or an aryl group, R 6 represent a hydrogen atom, an alkyl group, or an aryl group, R 5 and R 7 each independently represent a hydrogen atom or a methyl group, m1 represents an integer of 2 to 200, and m2 represents an integer of 2 to 20. L 2 represents an ethylene group or a propylene group, L 3 represents an alkylene group having 2 to 10 carbon atoms, L 4 represents an alkylene group having 1 to 10 carbon atoms, R 4 represents an alkyl group, or an aryl group, R 6 represent a hydrogen atom, an alkyl group, or an aryl group, R 5 and R 7 each independently represent a hydrogen atom or a methyl group, m1 represents an integer of 2 to 200, and m2 represents an integer of 2 to 20.