Contrary with the opinion and idea that the civilization difference induces the civilization conflicts, the commonness of civilization is more important in fact. In the various past researches about the civilization comparison, most scholars emphasized to review and look the differences among different civilizations, and deduced that the differences induced the conflicts. However, the differences among various civilizations are only one aspect of the fact, and on the other hand, the commonness exists among different civilizations. From many aspects such as common system, common earth, common goals, common opportunities, common threats, common benefits and common deficiencies, we scientifically analyzed the commonness among the human civilizations.