With the increasing global influences of overseas Chinese in recent years, China shifted from an ”internal overseas affairs” to an ”external overseas affairs”, also rapidly facilitated numerous overseas affairs organizations under the ”multiple developments” policy. It now has a far more complicated overseas affairs apparatus which included six major systems: The highest policy decision-making system; Participation in politics system; Planning and implementing system; Implementing system commissioned by inter-department; negotiating system commissioned by other Ministries; Political parties and People's organizations for overseas works. From the transaction cost perspective, this huge system can surely diminish searching cost, but will have to pay a high amount of negotiating cost, supervising cost, monitoring and measuring cost, and internal control cost.