Abstract: 【Objective】This study aimed to investigate the diversity, geographical flora composition and their invasion status of invasive plants in Sichuan to provide theoretical references for precise prevention and control and efficient management system of local invasive plants. 【Method】Based on field investigations, analysis of field samples, and data from specimen databases and websites, this study categorized and comparatively analyzed the flora structure, diversity characteristics, geographical distribution and invasion characteristics of invasive plants in Sichuan through invasive species composition, invasive hazard levels, floristic composition（families, genera, and species）, origins and distributions, and invasive characteristics. 【Result】A total of 236 invasive plant species belonging to 144 genera and 42 families were identified in Sichuan. Among them, Asteraceae had the most invasive species, with 49 species in 35 genera, accounting for 20.76% of the total invasive species. This was followed by Fabaceae（30 species in 17 genera, 12.71%）, Poaceae（27 species in 20 genera, 11.44%）, and Amaranthaceae（21 species in 8 genera, 8.90%）. From the perspective of flora composition, species of tropical origin dominated in the family（45.24% of the total families）, genus（56.95% of the total genera） and species（57.63% of the total species） levels, which was greatly higher than that of the temperate component. In terms of invasion hazard levels, there were 28 types of malignant invasions（level I）, 37 severe invasions（level II）, 26 local invasions（level III）, and 47 general invasions（level IV）. Additionally, 98 species were classified as requiring further observation（level V）. Regarding invasion flora characteristics, 64.83% of the invasive plants originated from America, followed by Asia（14.41%）, Europe（11.44%）, Africa（7.20%） and Oceania（2.12%）. Herbaceous plants accounted for 85.59% of the invasive species. 【Conclusion】The wide variety of invasive plants with diverse origins in Sichuan poses severe threat to the local ecosystem. Therefore, it is urgent to strengthen the forecasting and management of these invasive plants in order to effectively respond to the serious threats broght by invasive plants.