The invention discloses thiophene-containing triphenylamine conjugated aromatic amide as well as a preparation method and application thereof, relates to an electrochromic material and a preparation method thereof, and solves the problems of complicated synthetic process, poor thermal stability and low electrochromic response sensitivity of an existing amide electrochromic material. Thiophene-containing triphenylamine conjugated aromatic amide has a structural formula shown in the specification. The preparation method comprises the following steps: 1, dissolving diamine monomers and triethylamine in a DMF (dimethyl formamide) organic solvent to obtain mixed liquid A; 2, dissolving alpha-thiopheneacyl chloride in the DMF organic solvent to obtain mixed liquid B, mixing the mixed liquid A with the mixed liquid B in an ice water bath, and performing heating reflux to obtain reaction liquid; 3, filtering and collecting solid-phase matters, performing chromatographic separation, and re-crystallizing. The electrochromic material is simple to prepare, good in thermal stability, relatively good in electrochromic response sensitivity and relatively wide in color change range.