Abstract: With dodecanol dodecanoate as the phase change material (PCM) and polyvinyl alcohol (PVA) as the supporting material, the dodecanol dodecanoate@PVA thermo-regulated fibers were prepared by emulsion electrospinning technology. The SEM, TEM, DSC, TGA, mini temperature recorder and infrared thermal imager were applied to study the composition of the spinning solution and the surface morphology, latent heat value, thermal stability, temperature regulating properties, mechanical property and water solubility of the electrospun fibers. The results show that with 10.0wt% of PVA and dodecanol dodecanoate∶PVA mass ratio of 50%, the spinning solution has better stability and spinnability. The dodecanol dodecanoate@PVA electrospun fibers have apparent core-sheath structure, and the thermal decomposition temperature of PCM in the fibers is 20℃ higher than the pure PCM, displaying good thermal stability. The latent heat value of dodecanol dodecanoate@PVA electrospun fibers is about 63 J/g, showing good heat storage and temperature regulation performance in cooling process and thermal infrared imaging test. After the crosslinking with glutaraldehyde, the thermal stability of the support material in the electrospun fibers is significantly enhanced, and the mechanical properties and water solubility of the fibers have notable improvement.