The content of soil stone is rich in the rocky mountain area of North China, which has an important influence on the macropores and water transport. The study was carried on Miyun reservoir in Beijing, in order to explore the relationship among stones, macropores and the soil saturated hydraulic conductivity. The results showed that: (1) Volume content of stone is in the range of 7.10%~22.05%, while mass percent is range from 10.76% to 38.20%. Stones in the size of 5~10mm has highest content in soil. The percentage composition of stone with the slope aspect has regulation as follows: adret slope > semi shaded slope> shade slope; (2) The macropore density of equivalent pore >1.5mm showed very significant correlation relationship with stone content (P<0.01).The volume content of stones with the size >5mm has a significant correlation relationship with macropore density (P<0.05). It illustrate that stones mainly affect macropores with large size, and stones in size of >5mm have a key influence on the formation of macropores. (3) The amount of equivalent pores with size >1.5mm only accounted for 1.41% of the total macropores, but determined the 54.44% of the saturated conductivity. The hydraulic conductivity and the amount of equivalent pores with size >1.5mm has a linear relationship. Exploring the relationship among stones, macropores and saturated hydraulic conductivity can provide a comprehensive understanding of forest soil and water conservation mechanism and hydrological adjusting process. It can also provide theoretical basis to the water resource utilization and protection in Rocky Mountain, and the establishment of hydrological process model.