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In order to explore the movement characteristics of water and salt in soil under moistube-irrgation with brackish water, an indoor soil box simulation experiment was conducted under five different mineralization degree treatments with distilled water as control in 72h. The results showed that with the rise of mineralization degree, the maximum migration distance presented a trend of first increase and then decrease in different directions and reached the highest when the degree of mineralization was 3.0g/L. And the distances of wetted front under treatments of brackish water were all greater than that of distilled water. Then the cumulative infiltration was substituted into the Kostiakov infiltration equation and the infiltration coefficient showed a trend of rise first and then fall with the increase of mineralization degree, while infiltration index continued to decline. The soil conductivity was increased constantly to all around with the moistube-irrgation zone as axis and reached the peak at the wet front. The desalting area was related to the shape of the wetted body and distributed in circular shape. There was no significant difference in the average salt content of soil profile between brackish and distilled water after infiltration. The desalination radius was decreased linearly with the increase of mineralization degree. Both surface and bottom convergence phenomenon existed and the salification in soil surface was more serious under moistube-irrgation.