1999 earthquake is an important watershed in Taiwan to promote the establishment of modern emergency management system. 2003 SARS epidemic in mainland China is an important milestone also to build the modern emergency management system. Taiwan's emergency management system mainly based on the ”Disaster Management Act” to the specific from the ”disaster management organizations,” ”disaster contigency plan”, ”disaster prevention”, ”disaster response”, ”disaster recovery” to render its structure. The core of China emergency management system is ”one plan and three systems. It was the base and support for emergency response. ”One plan” refers to General Emergency Contingency Plan(GECP); ”Three Systems” refers to the structure, mechanism and legal system. GECP is the leading of emergency management system specifies the organizational system, operation mechanism, emergency support and supervision issues. This article from the legal structure to explore the connotations of the cross-strait emergency management laws and regulations, and concluded to make analysis and comparison.