In this study， Hordein/PGA composite nanoparticles were fabricated by solvent evaporation using hordein and PGA as materials， and resveratrol was encapsulated. The results indicated that the particle size of Hordein/PGA decreased from 1 654.9 nm to 475.9 nm with the increase of PGA content. The potentials of Hordein/PGA were negative， and the value decreased from -3.62 mV to -8.04 mV with the increase of PGA content. Fluorescence spectra showed that hydrogen bonds， hydrophobic effects and electrostatic interactions contributed to the formation of Hordein/PGA composite nanoparticles. Resveratrol was encapsulated by Hordein/PGA1:1 to construct ternary composite nanoparticles (Hordein/PGA/Res)， and the encapsulation rate of resveratrol reached 87%. Fourier transform infrared and X-ray diffraction demonstrated that resveratrol was effectively combined with hordein and PGA. The retention rate of resveratrol in Hordein/PGA/Res after heat treatment at 85 ℃ for 30 min was 88%， which remarkably higher than the free resveratrol (73%). And the retention rate of resveratrol increased by about 16% after 6 h ultraviolet light treatment.