[Aim] In order to study the ecological factors contributing to the invasion of Solidago canadensis, and the relationship between the invasion and the local ecological environment were analysed.[Method] By quantifying 22 habitat factors, such as elevation, slope, etc., the invasive patterns of different habitats with different characteristics were accurately described, and a principal component (PCA) analysis was carried out.[Result] (1) The ecological information which included 22 ecological factors according to the habitat of the plant could be expressed by six comprehensive factors:the soil resource factor, soil physical and chemical factor, vegetation factor, compound factor, interference factor and light source factor. (2) The frequency of occurrence of S. canadensis was positively correlated with available potassium, total plant density, weed coverage, organic matter, plant species number, elevation, slope, tree height, tree size, soil moisture content and was negative correlated with distance from water source, the available phosphorus, total phosphorus, and the soil pH.[Conclusion] This study is helpful to clarify the ecological factors of this invasive plant, and could provide a theoretical basis for its effective control.