The invention relates to a purple active dye based on an anthraquinone azo multi-chromophoric group, and a preparation method and application thereof. The structural formula of the purple active dye is as shown in the specification. The preparation method of the purple active dye based on the anthraquinone azo multi-chromophoric group comprises the following steps: synthesizing of a first concentrate liquid, synthesizing of a second concentrate liquid, synthesizing of diazonium salt, and synthesizing of the purple active dye; the purple active dye is used for dyeing and printing cotton, artificial cotton, hemp, regenerated fibres, silk and textiles thereof. The purple active dye prepared by the preparation method is novel in structure and novel in colour light, has a high molar extinctioncoefficient and excellent deep dyeing property, and does not stain; when the purple active dye is used for printing a cotton textile or a silk textile, the lifting force performance, the colour fastness and the like are good; according to the purple active dye, the intermolecular colour matching performance is realized and the problem of poor reproducibility when colour matching of a monogenetic dye is performed is avoided by introducing a plurality of different chromophoric bodies into a molecule simultaneously.