The level of soil conductivity reflects the amount of salt in the soil. In this study, the saline soil of a jujube garden in southern Xinjiang was taken as the research object. The spectral data of 142 soil samples were collected using Zolix GaiaSorter near infrared imaging high spectrometer at the band of 900-1,700 nm. At first six spectral pretreatments were performed, and then SPA and CARS were used for feature band extraction,and model effects of SPA-PLS, CARS-PLS, and full-wavelength PLS soil conductivity at different wavebands were comparatively analysed. The results showed that CARS-PLS model was superior to SPA-PLS and W-PLS, and the MSC-treated CARS-PLS model had the best effect. Therefore, the use of hyperspectral technology combined with CARS-PLS can achieve rapid and accurate conductivity measurement of soil saline soil in Southern Xinjiang jujube garden.