The invention discloses an active orange dye and preparation and application thereof. The active orange dye has a structure shown in formula (I), wherein R is hydrogen, C1-5 alkyl groups, C1-5 alkoxyl groups, C1-5 carboxyl groups, aldehyde groups, sulfo groups or amide groups; Z is hydrogen or AlkSO3M, and Alk is methylene or ethylene; A1, A2 or A3 is respectively selected from self-substituted phenyl group or substituted naphthyl; M is hydrogen or alkaline metal ion. The active orange dye has the advantages that the color fixation rate and color fastness are good, the stability is good after dyeing, the color is bright, and the active orange dye can be widely applied to dyeing technologies, such as dip dyeing, roll dyeing and ink jet printing of cotton, hemp and manmade cotton fiber products; the production cost is low, and the active orange dye can be popularized and applied in a large scale way.