Abstract: The shape stabilized thermal energy storage phase change composite material is presented. The properties of thermal energy storge material include melting point, the heat of fusion, thermal stability and microstructure are investigated. The shape stabilized thermal energy storage phase change composite material is composed of thermal energy storage material and solid skeleton material by physical adsorption. The Differential Scanning Calorimeter （DSC） was used to determine melting point and heat of fusion of thermal energy storage material. The thermogravimetry（TG） instrument was used to determine the thermal stability of the thermal energy storage material. The microstructure of the thermal energy storage material is viewed by Scanning Electron Microscope （SEM）. The results show that the material has higher latent heat and better thermal stability, so it can be used in thermal energy storage and heat recovery system.