【Objective】 Soil macropores play an important role in hydrologic processes, such as rainfall infiltration, runoff occurrence, soil water movement and sediment deposition. As soil erosion varies with terrain (bottom and costa colpi of gully and the damland) in generation and development process, the soil forms under soil erosion vary too in soil texture and soil porosity. However, so far little has been done on effect of terrain on characteristics of soil macropores. 【Method】 In this study, undisturbed soil columns were collected at the three different landforms for analysis of macroporosity and rules of its variation with terrain and soil depth using the computerized tomographic scanning method. 【Result】 (1) Terrain did have a significant effect on macropore parameters. Damland was much higher than gully bottom in soil macroporosity, number and roundness of macropores and mean area per macropore. However, the effect of terrain on macropores was lower than that of vegetation as documented in previous studies. (2) Macropores also varied significantly in parameter with soil layer (50 mm each). Mean macroporosity and variation coefficients of the macropores in the soil at costa colpi varied sharply around the depth of 102mm. Macroporosity in the soil at the bottom of gullies fluctuated slightly, but did more significantly in the upper layer than in the lower layer. However, in the soil of damland, macropores varied in a similar trend in the upper and lower layers. (3) Soil macroporosity was significantly or extra-significantly and positively related to the number of soil macropore number and mean size per macropore, while the number of macropores was significantly and negatively related to clay content and saturated hydraulic conductivity. Equivalent diameter of the macropores was positively related to silt content and negatively to sand content. And (4) the macropores in the bottom of gullies were much higher in pore connectivity than those in the costa colpi and damland. From the point of view of reasons of the formation of macopores, those in the bottom and costa colpi of gully were formed under the impact of plant root systems, while those in damland were under the impact of long-term sedimentation and water infiltration. 【Conclusion】CT scanning showed that the differences in characteristic between soil macropores in the bottom, costa colpi and damland of gullies may be attributed to soil erosion and deposition processes.