Abstract: Transgenic escape is a kind of risk accompanying with the release of engineered plants. High risks of transgenic escape have been found in some crops. The paths for transgenic escape have been analyzed, and the factors affecting transgenic escape are discussed. The transgenic escape risks of main crops in China have been preliminarily evaluated,and the countermeasures for avoiding and reducing transgenic escape have been proposed. 

Key words: transgenic escape, risk evaluation, crop weed hybridization