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The origin of outflow in narrow-line region (NLR) of active galactic nucleus(AGN) is studied in this paper by focusing on the relationship between the[\ion{O}{3}]$\lambda$5007 line profile and the hard X-ray (in a bandpass of2-10 keV) emission from the central SMBH in type-I AGNs. A sample of 47 localX-ray selected type-I AGNs at $z<0.2$ is extracted from the 2XMMi/SDSS DR7catalog that is originally crossmatched by Pineau et al. The X-ray luminositiesin an energy band from 2 to 10keV of these luminous AGNs range from $10^{42}$to $10^{44}\ \mathrm{erg\ s^{-1}}$. A joint spectral analysis is performed ontheir optical and X-ray spectra, in which the [\ion{O}{3}] line profile ismodeled by a sum of several Gaussian functions to quantify its deviation from apure Gaussian function. The statistics allows us to identify a moderatecorrelation with a significance level of 2.78$\sigma$: luminous AGNs withstronger [\ion{O}{3}] blue asymmetry tend to have steeper hard X-ray spectra.By identifying a role of $L/L_{\mathrm{Edd}}$ on the correlation at a$2-3\sigma$ significance level in both direct and indirect ways, we argue thatthe photon index versus asymmetry correlation provides evidence that the AGN'soutflow commonly observed in its NLR is related with the accretion processoccurring around the central SMBH, which favors the wind/radiation model forthe origin of the outflow in luminous AGNs.

A Direct Linkage Between AGN Outflows in The Narrow-line Regions and The X-ray Emission From The Accretion disks