SCO is a regional cooperation organization covering a big majority of Eurasian land mass. Since its founding, it has made remarkable achievements in striking the Three Forces, and organizing and conducting cooperation in military, political, economic and other fields. This thesis first analyzes the current state of the regional economic cooperation of the SCO member states and the regional economic integration strategy of each SCO member state, based on which it then proceeds to give an in-depth examination of the various reasons for the differences in the SCO regional economic integration from the perspectives of national strategy, economic interest, structural contradiction, external interference starting from the economic competitiveness of China and Russia. In conclusion the thesis proposes corresponding tactics and measures accordingly. <<