Community structure and throughfall erosivity of artificial rainforest were compared with rubber forest and seasonal rainforest in this study. After 16 years grown without any management, the Shannon-Wiener index of artificial rainforest has increased to 3.652, which was much closer to local seasonal rainforest. A calculation of throughfall erosivity based on 6 years' data shown that the throughfall erosivity of artificial rainforest in July was 962.2 MJ mm hm^-2 h^-1 a^-1, and the amount of rainfall erosivity reduction to clear surface was2.08 times higher than rubber forest. Artificial rainforest has similar community structure and leaf area index(LAI) to tropical seasonal rainforest, and decreasing throughfall erosivity efficiently,which were very useful for soil conservation and vegetation restoration. Artificial rainforest is a feasible restoration type for degraded ecosystem in tropical area.