A planographic printing plate precursor including: a support; a hydrophilic layer including a hydrophilic polymer chemically bonded to a surface of the support, where the hydrophilic polymer has a positively-charged substituent and at least one reactive group selected from the group consisting of a reactive group capable of directly chemically bonding to a surface of the support and a reactive group capable of chemically bonding to a surface of the support via a crosslinked structure; and an image forming layer, wherein the hydrophilic layer and the image forming layer are provided in that order on the support.