Abstract: Objective To translate the Sense of Community Index(SCI) into Chinese, and to measure its reliability and validity. Methods The Chinese version of SCI(C-SCI) was translated and revised, and 351 community elders were selected by convenient sampling method to complete the reliability and validity evaluation of the scale. Results The C-SCI included 16 items. Four factors are obtained by principal component analysis and orthogonal rotation of square error. The cumulative variance contribution rate is 66.619%. The confirmatory factor analysis(CFA) indicated that the value of relative chi-square(CMIN/DF), goodness-of-fit index(GFI), comparative fit index(CFI), incremental fit index(IFI), tucker-Lewi index(TLI), root mean square error of approximation(RMSEA), root of the mean square residual(RMR) and the standardization regression coefficient were 1.644, 0.902, 0.941, 0.942, 0.926, 0.060, 0.040, 0.542-0.798, respectively. The combined reliability(CR) of each dimension is 0.726-0.825, the average variance extracted(AVE) is 0.401-0.541. The Cronbach'α and the split-half reliability coefficient of Guttman the whole scale were 0.854 and 0.811, respectively. The Cronbach'α of each dimension were 0.767-0.852. Conclusion The revised C-SCI shows acceptable reliability and validity. It can be used to evaluate and research the communication ability in the elderly in the community.