The present invention relates to a visible light-curable water-soluble chitosan derivative, a hydrogel, and a preparation method therefor and, more specifically, to a visible light-curable glycol chitosan derivative which is cured by light in the visible light range and has wound healing ability, a hydrogel, and a preparation method therefor. A hydrogel obtained by cross-linkage of the visible light-curable glycol chitosan derivative according to the present invention using visible light has a wound healing effect per se, and further, a hydrogel obtained by cross-linkage in a combination of one or more growth factors has an excellent wound healing effect. In addition, the glycol chitosan hydrogel which can prevent the denaturation of contained drugs and growth factors due to the cross-linkage by visible light and is optimized for application to a wet dressing dosage form can be prepared.;COPYRIGHT KIPO 2018
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