Abstract: Industrial correlation level of agriculture in Shaanxi province was analyzed through backward correlation degree and forward correlation degree based on input-output model and input-output extension table of Shaanxi Province in 2017.Ripple effect was also studied through influence coefficient and sensitivity coefficient.Results showed that：the strongest backward correlation of agriculture were chemical products，agriculture，food and tobacco industry; agriculture had a strong forward correlation with food and tobacco，wood processing products and furniture industries; agriculture had obvious pull action to Shaanxi′s national economy，but had a low position in national economy.