Since the 21st century，although the proportion of state-owned economy in all countries in the world continues to decline，its importance and influence in the world are becoming more prominent. In addition to China，countries with a high proportion of state-owned economy are mainly concentrated in former socialist countries in Europe，economic powers in the European continent and emerging economies. The industrial layout of state-owned economies around the world shows significant consistency，mainly focusing on basic and strategic industries such as resources，energy，water，gas and electricity，transportation，telecommunications and finance. Affected by the diversification of business objectives and the complexity of external environment and internal constraints faced by enterprise development，state-owned enterprises still have the problem of low business performance on the whole. There are obvious differences in the functional orientation of state-owned economy between economically developed countries and developing countries. In addition to the traditional functions of providing public goods，ensuring national economic security and maintaining economic and social stability，state-owned enterprises in many developing countries also play a pioneering or leading role in national development strategies such as economic transition，catching up and even international competition. Based on the above differences，the financial crisis not only accelerated the rise of the strength of emerging economies to a certain extent，but also accelerated the pace of their state-owned enterprises participating in international economic and trade cooperation and competition. The rise of the global influence of state-owned economy in emerging economies has aroused great concern in economically developed countries and triggered profound changes in the development environment of state-owned economy. On the one hand，led by European and American countries，countries around the world generally strengthen security review and raise the threshold for foreign investment access in key infrastructure，core technology，information security and other fields. On the other hand，the overseas development of state-owned enterprises will be restricted by more stringent international rules such as competition neutrality，which is bound to have an important impact on their role in implementing and promoting national （overseas） development strategies. According to the changed external development environment，the country urgently needs to make corresponding deployment and adjustment in the external development strategy，the layout structure of the state-owned economy and deepening the reform of state-owned enterprises.