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In order to research the characteristics of wetted soil under miostube-irrigation, five different buried depths and six different pressure heads were designed to investigate soil water movement through indoor soil box experiments. The results revealed that the pressure was the key factor to decide the miostube-irrigation flow, and the buried depths of miostube-belt had significant effect on the shape of wetted soil. The horizontal migration distance and ratio of width to depth of γ decreased with the increase of buried depths and vertical migration distance slightly increased with the increase of buried depths. There was a negative correlation between cumulative infiltration and buried depths and changing process of infiltration with irrigation time was accorded with Kostiakov infiltration model. The simulation model of cumulative infiltration under different buried depths was established and tested with measured values. The results showed that the experimental equation of infiltration had a high correlation coefficient between the measured value and the calculated value. There was a positive correlation between soil moisture uniformity and buried depth, and the suitable buried depths of clay loam of miostube irrigation were between 15 and 20 cm. 