This invention, although it remedies the spinal cord damage and the deviation from medulla characteristic disease fundamentally, designates that the effective medicine is offered as purpose. The medicine of this invention is the spinal cord damage remedy medicine and the deviation from medulla characteristic diseased remedy medicine which designate the HGF protein as the active ingredient.本発明は、脊髄損傷及び脱髄性疾患を根本的に治療するのに有効な薬剤を提供することを目的とする。本発明の薬剤は、HGF蛋白質を有効成分とする脊髄損傷治療剤及び脱髄性疾患治療剤である。