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Cu and Pt nanoparticles (NPs) were simultaneously integrated with glutathione (GSH), and the resultant Cu-Pt NPs decorated GSH (GSH-Cu/Pt) was characterized by FT-IR and X-ray photoelectron spectroscopy (XPS). Next, the GSH-Cu/Pt was used for electrochemical chiral sensing of tyrosine (Tyr) enantiomers, and the results show that the recognition efficiency, indicated by peak current ratio of L-Tyr to D-Tyr and peak potential separation, of the GSH-Cu/Pt is superior to those of GSH, Cu NPs decorated GSH (GSH-Cu) and Pt NPs decorated GSH (GSH-Pt). The higher affinity of GSH-Cu/Pt to L-Tyr than D-Tyr is further confirmed by density functional theory (DFT) and UV spectra. Keywords: Glutathione, Decoration, Copper-platinum nanoparticles, Chiral sensing, Tyrosine enantiomers