Abstract: With the acceleration of urbanization, the scale of urban subway construction has also expanded significantly. During the operation of the subway, a large amount of water resources are required for water supply, drainage and fire fighting. In the construction and improvement of subway stations, water supply and drainage, fire protection, energy conservation and water conservation should be the key points to be studied and explored. Although my country's subway stations still have shortcomings in terms of energy and water conservation, with the advancement of energy-saving and water-saving technologies, through the selection and use of water-saving equipment and changing water-saving ideas, the water used in subway stations can be effectively controlled and saved. In view of this, the article discusses in detail the water-saving measures of subway water supply and drainage, aiming to provide valuable reference and reference for industry professionals, and then better contribute to the healthy, sustainable and prosperous development of the industry.