Why did China choose certain policy over others that would achieve similar impact? Because China has a significant presence in the modern international community, it is difficult yet critical to understand the policy implications of the Chinese government under its unique political and socioeconomic context. This thesis shows the impact of a specific “price floor” policy China chose to employ in its oil and gasoline market, and identifies the factors concerning the Chinese regime that it took into consideration in the decision making process, through analysing data and official statements released by the government. After different parties affected by this policy are recognized, this thesis investigate how those impacts relate back to the Chinese government’s long-term agenda of energy security and environmental protection.