战后５０年国际关系的最显著的特点是大调整。它首先从世界资本主义体系的调整开始的。资本主义的发展已经到了非调整、改革不可的地步，社会主义的发展又加快了它的调整进程。两极体制崩溃为社会主义的调整、改革带来新局面。２１世纪的国际关系格局同两种制度的调整进程密切相关。 The most notable feature of international relations in the 50 years after the war is a major adjustment. It first started with the adjustment of the world capitalist system. The development of capitalism has reached a point of no adjustment and an inevitable reform. The development of socialism has accelerated its adjustment process. The collapse of the bipolar system has brought about a readjustment of socialism and a new situation in the reform. The pattern of international relations in the 21st century is closely related to the adjustment process of the two systems.