This article experimentally investigates the Chilled water system energy saving improvements of textile air-conditioning system. The chilled water system in traditional textile air conditioning system is an open system, evaporator is prone to scale, chilled water storage tank poor insulation and water temperature increases, resulting in increased maintenance and operating costs. The addition of cooling coils and steam coils to the air handling unit makes the chilled water system a closed system is an energy saving improvement. Due to the chilled water pump system change into a closed system, allowing the pump low speed (using the inverter to reduce the frequency) operation. This article uses cloud energy management system for long-term measurement and validation to analysis of energy conservation. The results show the energy saving rate of the present system is 18.52% and the average frequency of chilled water pump is 55HZ, energy saving rate is 21.32%.