The worldwide success in crop biotechnology has been made in recent years,and the industrialization of them has been speeded up with the help of government. With large amount of transgenic plants being commercialized,people feel uneasy about the potential risks of transgenic plants to environment,human health and ethics. The bio-safety of transgenic crop has aroused more and more concern. In this paper,the development of international transgenic crop and question of bio-safety have been discussed. The impor...