[Aim] Understanding the species composition of invasive plants in Fuzhou and analyzing their origin and invasion level can provide reference for their prevention and control and biodiversity protection in Fuzhou. [Method] This paper investigated and analyzed the species, origin, life history and degree of invasiveness of plants in 49 parks in 4 districts of Fuzhou. [Result] Invasive plants were distributed in all the parks investigated. There were 66 invasive plant species in Fuzhou, belonging to 25 families. Asteraceae, Leguminosae and Amaranthaceae were the dominant families, 33 species in total, accounting for 50.00% of the total number of invasive plants. Most of the invasive plants were native to America, followed by Africa, Europe and Asia. There were 55 herbaceous species, accounting for 83.30% of the total invasive species. According to the level of invasiveness, each species was classified into one of 5 categories: 16 species of agressive invasive plants (grade 1), 14 species of serious invasive plants (grade 2), 12 species of local invasive plants (grade 3), 11 species of general invasive plants (grade 4) and 13 species requiring further analysis (grade 5). [Conclusion] Invasive plants in Fuzhou are a serious issue, and monitoring and early warning of invasion are needed to prevent their spread and causing major ecological problems.