This paper describes and analyzes the current situation of China's oil security from two aspects: the current situation of the oil market and the degree of dependence on foreign oil. At the same time, it explores the important factors affecting China's oil security strategy based on the three dimensions of international oil price, oil import channel and oil import transportation channel. By using the interdependence theory and supply-demand relationship theory in political economics, this paper analyzes how China should ensure oil security and realize China's oil security strategy. Finally, it aims to ensure China's oil security from five aspects: improving oil utilization efficiency, enriching oil import sources, developing new energy, integrating into stone oil pricing system and improving oil reserve strategy Safeguard national economic interests and put forward practical policy suggestions.