The invention provides super-hydrophilic cross-linked resin, application thereof and a treatment-free thermosensitive plate containing the super-hydrophilic cross-linked resin. The super-hydrophilic cross-linked resin has three characteristics of super-hydrophilicity, thermosensitive cross-linking property and
solvent resistance. The
processing-free thermosensitive plate is provided with the middle layer, the middle layer contains the super-hydrophilic cross-linked resin, meanwhile, the thermosensitive layer is not designed to be super-hydrophilic any more, the inking property of the plate is better, and the problem that the on-press development (DOP) capacity, the pressrun and the inking property of the
processing-free thermosensitive plate contradict is effectively solved through the middle layer.