To confirm the effects of mulching on soil aggregate characteristics, the distribution of micro-aggregate and macro-aggregate and also stoichiometry of macro-aggregate were explored. In the 20—40 cm soil layer mulched with manure, the percentage of the 10～150 μm micro-aggregate was 84.5%, which was 3.7% higher than control, while the percentages of the 1～5 mm macro-aggregate and the ＞5 mm macro-aggregate were 47.74% and 33.04%, respectively, and the corresponding changes were 56.8% and 49.5% compared with control. In the 0—20 cm soil layer, total N, total P, TOC of all soil aggregates mulched with manure were, on average, 1.04, 0.81, and 14.39 g/kg, respectively, which were 2.9, 5.1, 1.4 times that measured in control, and the corresponding values under treatment with wood chips were 0.61, 0.32, and 7.42 g/kg, respectively, which were 1.7,1.0, 2.3 times that measured in control. The C/N, C/P, N/P ranges of soil aggregate mulched with manure were 8.29～22.65, 4.45～27.18, and 0.44～1.89, respectively, and the ranges of that of wood chips were 4.09～29.60, 5.32～59.88, and 1.04～3.29, respectively, while the control were 4.71～12.24, 10.08～25.42, and 0.86～3.10, respectively. In all, mulching promotes the percentage of the 1～5 mm macro-aggregate, and weaken the ＞5 mm macro-aggregate and micro-aggregate. Moreover, the total N, P, TOC and C/N, C/P of the soil aggregates were all increased in degree with muchling.