The present invention is to provide a fingerprint-displaying spray, which comprises based on the total weight of (A), (B), and (C): (A) 1~10 weight parts of an amino acid reacting agent (B) 5~30 weight parts of a dispersing agent and (C) 50~150 weight parts of a propellant. By means of comprising the dispersing agent and the propellant, the present invention can be made to have convenience and excellent fingerprint displaying effect, reduce the use of toxic chemical substances which contaminate the environment, and achieve the purposes of low costs and sample contamination prevention, being applicable to the technological field of latent fingerprint detection.本發明係提供一種指紋顯現噴劑,以成分(A)、(B)及(C)之總重計包含:(A)1至10重量份之胺基酸反應劑;(B)5至30重量份之分散劑;及(C)50至150重量份之噴射劑。本發明藉由包含分散劑及噴射劑,以使可具有便利性與良好指紋顯現效果,並降低污染環境之有毒化學物質之使用,且達到成本低及不污染檢體之目的,進而達到可應用於潛指紋檢測之技術領域之目的。
