Chitosan quaternary amine salt gallate, synthetic method thereof and application thereof

The invention relates to the daily chemical field and the medicinal industry, and concretely relates to a chitosan quaternary amine salt gallate, a synthetic method thereof and an application thereof. A chitosan trimethyl quaternary amine salt is reacted with acylated gallic acid to obtain the chitosan quaternary amine salt gallate which has a structure represented by formula (1). The chitosan quaternary amine salt gallate obtained in the invention, which can be dissolved in water, has a synergic effect and allows the chitosan application to be enlarged, can be widely applied to the daily chemical field of medicines and the like.