This book is one of the "Beijing Flood and Drought Disaster Series". With the theme of disasters, this book extensively collects a large number of historical materials and relevant materials since the founding of New China, and scientifically and comprehensively analyzes the causes, characteristics, occurrence patterns and development trends of flood and drought disasters in Yanqing County. On the basis of carefully summarizing the historical experience of disaster prevention and reduction, and based on the development requirements of Yanqing County in the 21st century, countermeasures and measures to prevent and control flood and drought disasters were proposed.