European Union No 650/2012 Regulation on International Succession explicitly stipulates the scope, jurisdiction, applicable law, recognition, enforceability and enforcement of decisions, authentic instruments and court settlements, issue and effects of European certificate of succession. The regulation establishes the foundational?status of habitual residence in decision of jurisdiction and applicable law, adopts unitary system and creates European certificate of succession. To promote the unification of private interregional law in China, China should insist the habitual residence with the combination of principle and flexibility, adopt unitary system with exception, enhance judicial mutual trust in civil and commercial areas with Hong Kong, Macau and Taiwan, and establish special permanent official institutions consisting of experts from four regions.