With low cost, environment friendly and excellent three-dimensional reticular porous structure of towel gourd (TG) fibers as the support material, polyethylene glycol (PEG) as the phase change matrix, the TG@PEG@PU phase change composites (PCCs) was fabricated by combined with physical adsorption and polyurethane (PU) film packaging technology. The morphological structure, as well as the properties of temperature regulation, thermal energy storage and thermal stability, of the fabricated PCCs were tested and analyzed. The results showed that the TG fibers have high PEG adsorption rate (~ 82%), and PU film packaging solves the leakage of PEG. Infrared thermal images show that TG@PEG@PU has excellent thermal energy management ability, due to delay response to temperature change. Differential scanning calorimeter tests indicat that the melting/crystallization enthalpies of TG@PEG@PU are respectively 186.4 and 176.1 J/g, which demonstrating superior heat storage ability. Thermogravimetric analysis show TG@PEG@PU has good thermal stability in medium and low temperature range. It is expected to be widely used in building energy conservation, thermal energy management and thermal infrared stealth, etc.