Both the elementary characteristics of Alsophila podophylla population such as population density, height and DBH, and the relationships between population parameters and each of standing tree density and soil factors on Wuzhi Mt. were studied. Results indicate that there is significantly different on mean densities of A. podophylla and standing tree between the montane rainforest and lowland rainforest, but no difference on mean height and DBH of A. podophylla; A. podophylla mean density in lowland rainforest (0.12 ind•m-2) is twice of that of montane rainforest(0.06 ind•m-2), and in contrast, standing tree density in the latter(0.467 ind•m-2)is 1.4 times of that of the former(0343 ind•m-2); Within a certain range of elevation, A. podophylla mean density gradually decreases, while standing tree mean density increases with increasing of elevation; In montane rainforest, mean density and mean height of A. podophylla are positively correlated, and the population is stable. However, they are negatively correlated and the population is growing in lowland rainforest.The correlaton between the mean density and mean height can be expressed by binomial equations.Relationship between the mean density and standing tree mean density is negative in montane rainforest,but positive in lowland rainforest, the correlaton can be expressed by simple linear equations.Compared with lowland rainforest, organic matter content, total nitrogen content, soil moisture and pH in montane rainforest are inclining to be increasing, and total phosphorus content, total kalium content are in the contrast.; pH and total kalium are closely associated with mean population density, total kalium and total phosphorus are closely associated with mean height, and pH and total kalium are closely associated with mean DBH, Their correlation can be expressed by binary linear equations respectively. Total kalium content has the greatest impacts on A. podophylla population, and the least does total phosphorus. Based on these models, protection, reproduction and cultivation of A. podophylla all can be designed.