Concentrate on the purpose of building ecological city and "low carbon Guangzhou, intelligent Guangzhou, happy Guangzhou", the paper investigates the current situation and problems in Guangzhou ecological environment building, borrows the successful experience and practice of building ecological city in other countries, grounds on the actual situation and proposes the ideas and models for building ecological city with Guangzhou characteristic. The paper provides strategy evidence for the promotion of ecological city building in the next five-year plan and also the ecological city building of cosmopolitan city in China. <<