Nano-aperture vertical-cavity surface-emitting lasers (VCSELs) with metal nano-particle are fabricated based on common 850 nm VCSELs. When the diameters of the aperture and the metal nano-particle are 400 nm and 100 nm respectively,the maximum far-field output power reaches 0.5 mW. The fabrication process is introduced and the output power enhancement due to localized surface plasmon is also analyzed by experiment and theory.