Global warming touches everybody’s nerve, and direct reason for sharp increasing of CO2 in the atmosphere results mainly from the use of fossil fuel in power generation and other industries. How can humans return this “devil” to underground, and keep a peaceful environment for human? Scientists from all over the world have been exploring them. Since 2005, scientists from the Jilin oilfield affiliated to China National Petroleum Corporation (CNPC) have developed integrated CCS-EOR techniques for CO2 capture, storage and enhanced oil recovery. Now this technique has become more and more mature, forming a systematic technique from CO2 capture, flooding to storage, and realizing commercial application. With flooding to enhance productivity, we have achieved CO2 zero-emission through cycling injection system. Carbon dioxide flooding technique is a recently developed technique used to increase oil recovery, with significant advantages in enhancing oil recovery of high-water, low- and ultra-low permeability reservoirs. When CO2 dissolved in crude oil, its volume expands, and viscosity decreases. Mixing of CO2 with crude oil will reduce the interfacial tension; this process improves the flooding efficiency, and further the oil recovery. Additionally, limestone (CaCO3) formed by reaction of a large amount of CO2 with underground Ca(OH) 2 can be buried deeply underground, thus reducing the greenhouse gas. Since 2005, CNPC has invested 3 billion Yuan firstly to conduct a pilot test of CO2 storage and CO2 flooding for Enhanced Oil Recovery (EOR). In the year of 2008, the Jilin oilfield built a pilot demonstration area of CO2 flooding and storage in the Daqingzi oilfield. And in the year of 2009, a demonstration area with its annual CO2 storage of 0.2 million ton and annual oil displacement of 0.1 million ton, was established, which indicates realization of commercial application of such technology. It is expected that by 2015, the first production area will be built in China, with an annual CO2 displacement amount reaching 0.5 million ton and an annual CO2 storage > 0.7 million ton, all of which are equivalent to the total amount of CO2 released from burning of 0.3 million coal.