In order to understand the distribution patterns and their influence factors of invasive plants, the species composition and flora of invasive plants in Changchun City were analyzed. A total of 85 species of alien invasive plants, which belong to 64 genera and 26 families, are identified and recorded in Changchun, with 4 harmful quarantine weeds among the invasive plants. Alien invasive species are mainly composed of Compositae, Amaranthaceae, Gramineae, Leguminosae and Solanaceae. Among them, Compositae has 18 species, occupying 21.18% of the total invasive species. Herbaceous plants have 81 species, occupies 95.29% of the total, indicating that herbaceous plants are more invasive than woody plants. Flora analysis showed that the floristic types of invasive plants in Changchun are mainly in the family of world distribution, and are in mainly the genus of world distribution, followed by the genera of North temperate and pantropic distributions. Accordingly, relevant measures and advice are made for preventing invasion of exotic plants in Changchun.