The "14th Five-Year Plan" period is a key period for China to transform the development model, optimize the economic structure and change the driving force. With the fundamental purpose of meeting the people's ever-growing needs for a better life, it is of great practical significance to deeply analyze the development needs of water affairs in the new era, coordinate the urban development with the planning and construction of water affairs, and explore the new ideas of high-quality development of water affairs with a problem-oriented approach. As a demonstration area of comprehensive cooperation among Guangdong, Hong Kong and Macao, Nansha District of Guangzhou undertakes an important development mission and faces a major historical opportunity of "dual-district" construction and "dual-city" linkage. Taking the "14th Five-Year Plan" of Water development of Nansha District as an example, the high-quality development ideas of water affairs in the new era are explored in order to provide the reference for the water development planning of Guangzhou and other regions of the country.