The clothing containing phase change material(PCM) with function of absorbing the body-released heat has wide applications. In this paper, preparation a novel cooling sodium sulfate decahydrate based phase change material,was investigated. The titled PCM was prepared by blending the sodium sulfate decahydrate with other composites and adjusting addition series of the composites before aging by cooling at a desired rate. Moreover, the manufacturing process has affected the property of the titled material greatly. The resulted PCM posses suitable melting temperature, large heat flow,stability after repeating applications, and the PCM is convenient for application and effective in cooling.