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In order to improve the utilization rates of water and fertilizer and reduce the loss of nitrogen fertilizer and deep seepage under bubbled-root irrigation, the change features of soil wetted body as well as the water and nitrogen movement characteristics with different fertilizer solution concentrations were studied. The relation between the cumulative infiltration volume and transportation distance of wetting front with the change of solution concentration was presented. Besides, the empirical models for cumulative infiltration volume and wetting front transportation distance were established under bubbled-root irrigation; the impact of fertilizer solution concentration on the distribution laws of NO-3N and NH+4N content within the scope of infiltration depth was analyzed. The results of the experiment showed that when the liquid concentration was increased, the cumulative infiltration in unit area was increased with time, and both infiltration amount and wetting front transportation distance showed remarkable power function relationship with infiltration time. The determination coefficients were up to 0.98 and 0.96, respectively, which were greater than the critical correlation index (0.6055); in the redistribution of infiltration, the liquid concentration of 41.7g/L could guarantee better water absorption of jujube root, the influences of different concentrations of nitrogen on conversion rate of soil were different, the conversion rate of nitrate nitrogen was not significant, and the conversion rate of ammonium nitrogen of 33.3g/L was the highest.