In an era of escalating disaster risks and increasingly complex governance challenges, social organizations have become indispensable actors in disaster response and recovery. This book provides the first systematic study of social organizations in disaster response and recovery, with a particular focus on China's developing practices and their connections to global frameworks. It begins with an overview of the global risk landscape and the theoretical foundations of collaborative governance, network governance, and co-production. It then examines international networks including the UN Cluster System, the Sphere Project, ADRRN, U.S. VOAD, and Japan's JVOAD, offering comparative insights into institutional embedding and multi-actor collaboration. The Chinese context is explored through detailed case studies from the 2008 Wenchuan Earthquake-the "first year" of social organizations in disaster governance. The book also highlights Chinese social organizations' overseas engagements in Nepal, Ecuador, Sulawesi, Türkiye-Syria, and Myanmar, underscoring both achievements and institutional constraints in cross-border action. By bridging theoretical analysis, case studies from China, and international experiences, the volume demonstrates the pathways of social organizations from ad hoc mobilization to institutionalized collaboration, offering critical insights for scholars, practitioners, and policymakers in disaster risk reduction and resilience-building.