Abstract: To study and solve the problem of great amount of energy consumed in the spinning department, the temperature and humidity independent controlled air-conditioning systems (THICACS) is introduced, including sensible heat and latent heat processing system, the principle of temperature and humidity independent controlled air-conditioning with displacement ventilation technology (THICAWDVT), and the operating principle of liquid air-conditioning systems with displacement ventilation. Aiming at the present problems of air-conditioning in the spinning department, the way of the technology applied to the air conditioning in the spinning department is discussed. Take the air-conditioning applied to the spinning department for example, the enthalpy-humidity chart of the air conditioning process and energy cost are analyzed and compared for the air-conditioning before and after using THICAWDVT. It indicates that the application of THICAWDVT can meet the production process requirements, and save about 68% cooling load.