Relative humidity is an important parameter for air conditioning and environmental control.With the strategic transformation of China's navy,ships are increasingly carrying out non war diversified tasks such as escort,evacuation,patrol,and rescue.Crew members need to work and live for a long time in relatively closed cabin environments.Adequate humidity in air directly affects the health and quality of life of crew members,and even the stable operation of equipment.Ships have the characteristics of a wide variety of ship types and diverse task requirements,and it is crucial to choose appropriate humidification technology.The article analyzes a large number of recent literature,elaborates on the importance of humidity,and analyzes and summarizes the applicability and development direction of five humidification technologies applied on ships,providing reference for subsequent ship humidification design.