Abstract:With the warming of the earth and the continuously global deteriorating of the eco-environmental problems, green technology is developing gradually. In order to promote the development and the innovation of green technologies, the fast examination system of green patents has been adopted by many countries. But the fast examination systems of green patents of many countries are different from each other especially in the subject qualifications, the examination scopes and procedures and the effects of its implementation. This article takes the United Kingdom, the United States, Korea and Japan for examples, describing and analyzing the present situations of the fast examination systems of green patents of those countries. Then this article sums up the advantages and disadvantages of the fast examination system of green patents and gives some suggestions to perfecting the fast examination system of green patents of China by combining the current situations of China.