Abstract: The belt and road initiative is open, diverse and win-win, which should be built facing complex international condition. This needs to be guided by Xi Jinping's diplomatic strategic theory. Xi Jinping's diplomatic strategic theory has foresight and targeted, which includes new ideas, new concept, new judgments such as the international role, neighboring countries' diplomacy, view of justice and benefit, overall national security concept, mutual learning of civilization, common development view. Those strategic thoughts have connected each other with the belt and road initiative, and also need systematic analysis and overall judgment.