Abstract: Based on the petroleum system division of our predecessors,the petroleum systems of Chinese marine basins can be divided into six types,that is,the aulacogen and its succeeding syneclise,the craton basin,the craton peripheral subsidence basin,the foreland basin,the strike-slip basin and the epicontinental fault basin petroleum system.The authors suggested that a complete petroleum system include four connotations practically.The major features of each system were analysed and summarized.The six types of petroleum systems can be further divided into simple and composite two kinds.