This is an interpretation of human civilization as a self-organizing system which develops itself through mutual interactions. Civilizations run by humans on the earth have experienced sudden cultural leaps and divisions time and again. Understanding this phenomenon requires to view them as self-organizing systems or complex systems, where the determinist law doesn't always work, and dominating forces are chiefly coincidence and non-conclusiveness. Referencing to other scholar's theories such as Arnold J Toynbee's Contacts of Civilizations, I try to deepen the logical observation on the leap and division of civilization from the perspective of the comparative study of civilizations.