The Cross-Sides Relation is in dense field of ideology, moreover the democratized Taiwan with plural opinions that shape hardly a single consciousness. And, the Cross-Sidespossess many differences such as the dispute of one-China, political system, living style, geographical environment and cultural mode etcs. This article intend to from a objective angle to retrospect and review the Cross-Sides relation in the theory and practice. No matter what the perception or the researching disputes toward the Cross-Sides relation that all could be conducive to resolve the disputes then improving the era's tide of peacefully development in the Cross-Sides.