According to the "Additional Articles of the Constitution of the Republic of China" and the "Act Governing Relations between the People of the Taiwan Area and the Mainland Area", the authority of Cross-strait exchanges belongs to the central government exclusively. However, the differences between social economic demand and political positioning cause the stumbling of Cross-strait exchanges. This article discovered that through the delegation of central government exclusive authority could solve the problem above. Namely, put the current delegation theory into practice in Cross-strait exchanges. It is totally possible that the central government delegate the local government to handle Cross-strait exchanges affairs. Therefore, it is another great progress for Cross-strait exchanges in our country.