The invention discloses an organic coating layer, an electrode material containing the coating layer and a lithium ion battery. The electrode coating layer is a polymer coating layer, and the polymer is obtained by polymerizing a composition comprising the following components: polyester polyol, polysiloxane, electrolyte salt, diisocyanate, an additive, a chain extender and metal chloride. The coating layer provided by the invention has crosslinking sites capable of crosslinking amorphous polymer blocks and also comprises dynamic acting forces such as hydrogen bonds and coordinate bonds, so that the tear resistance of the polymer material can be remarkably improved, the strength, ductility and toughness of the elastomer material are also remarkably improved, and the self-repairing function is realized; therefore, the generation of interface side reaction and electrode expansion can be well inhibited, and the cycle performance of the battery is improved. And meanwhile, the polymer in the coating layer can also form a synergistic effect with the lithium salt, so that the electrode has excellent ionic conductivity, and the lithium ion conductivity at an interface is further improved.