Abstract: In order to prevent detriments from the introduction of species, the ecological invasion risk should be analyzed and the corresponding control measures should be established after the introduction of species. In this article,through such methods as referring to information,field investigation and expert consultation,and by applying the invasion risk evaluation system of alien species and the invasion risk standard,analysis is made of the ecological invasion risk of introding Vetiveria zizanioides in chongqing area. The results have shown that Vetiveria zizanioides belongs to an alien species with a certain risk in Chongqing area,need to refer to more relevant information or take the precaution and control measures.