Human society is facing great challenges to address global climate change. How to move the international climate process forward is still a serious problem for politicians. Geoengineering's, so called Plan B to cope with climate change has attracted attentions of the international community with a lot of debate on its impact, risks from an ethical view as well as global governance at the level. In this paper, we focus on some important issues of geoengineering including the definition, characteristics, ethics and global governance, etc. and then put forward some suggestions for China's considerations.