The invention relates to a herbicide detection device, and especially relates to a 2, 4-dichlorphenoxyacetic acid residue rapid detection test paper strip. The 2, 4-dichlorphenoxyacetic acid residue rapid detection test paper strip comprises a bottom supporting layer, a middle adsorption layer fixed on the supporting layer and an outer protective layer fixed on the adsorption layer, the adsorption layer successively comprises, from a test sample end, a fiber layer, a fiber layer adsorbing gold immnnochromatography carrier protein Xi coupled with 2,4-dichlorphenoxyacetic acid, a cellulose film layer and a water absorption material layer at the handle end, the cellulose film layer is provided with a straight line type detection imprinting printed by a 2, 4-dichlorphenoxyacetic acid carrier protein solution and a straight line type comparison imprinting printed by a sheep or rabbit anti-mouse IgG solution, and the detection imprinting and the comparison imprinting are in parallel and combined arrangement of "I I". The 2, 4-dichlorphenoxyacetic acid residue rapid detection test paper strip has the advantages of strong specificity, high sensitivity, simple and fast operation, vivid, intuitive and accurate detection result display, low cost, less investment, no need of special equipment and professional staff, and easy popularization and implementation.