Abstract: Building international consumption center city is a major strategy made by the Central Committee of CPC and the State Council, which is of great significance to the establishment of a new development pattern and the promotion of high-quality economic development. As an important core of the Chengdu-Chongqing dual-city economic circle, Chengdu is accelerating the construction of an international consumption center city. Under the new dual-cycle pattern, the two-way opening up of finance is the key to helping Chengdu build an international consumption center city and integrate into the new development pattern.On this background, the thesis first defines the relevant concepts and sorts out the relevant theoretical foundations. Secondly, it points out the shortcomings of Chengdu’s current construction as an international consumption center city, and analyzes the reasons. Then, it analyzes the driving mechanism of Chengdu’s two-way financial opening under the dual-cycle strategy from the perspective of internal and external factors. On this basis, from the supply side, the demand side and the ecological side, the two-way opening up of finance is proposed to help Chengdu become an international consumption center city, including financial opening to the outside world to accelerate the construction of consumption infrastructure,increase the cluster degree of consumption resources, and improve consumption vitality and fusion,and opening up to the domestic market to promote the internationalization degree of Chengdu's consumption. Finally, it puts forward relevant policy suggestions.