This paper analyzes the main characteristics of the invasion of exotic and detrimental plant pests in China as well as their regularity of outbreak and potential risk.

Study on the Species,Distribution and Damage of the Invasive Alien Harmful Plants in Dongting Area;

species of harmful exotic plants belonging to 30 families, 53 genera in Xiamen area are described, and 12 important species are introduced in this paper.

Research progress on alien pest risk assessment methods;

A Study on the Risk Analysis Method & Risk Management Measure of the Alien Pest Invading;

In order to filfull the request of developing modern agriculture,and establish a technology platform for preventing and con-trolling alien pest,a prediction system of pest distribution is developed.

This paper analyzed the serious damage and the invasion trend of exotic pests, and suggested the strategies for prevention the exotic pests from invasion should include strengthening the infrastructure of plant quarantine, establishing the precaution system and consolidating the monitoring survey.

This paper describes the status of exotic pests in China,analyzes the invasion approach,environmental impact and the courses,indicates the economic loss of exotic pests,and puts forward some preventive measures.