Polydopamine (PDA) was synthesized on the surface of down feather and adhered to the phase change microcapsule (MEPCM) consisted of inorganic silica (SiO2) shell and n-octadecane (n-OD) core to prepare thermal storage and temperature regulation down feather (MEPCM/down feather). Firstly, the morphology, structure and properties of the microcapsule were characterized by scanning electron microscopy, particle size analysis, thermogravimetric analyzer and leakproof test. The results show that the average particle size of the microcapsule is 421.9 nm, and the microcapsule displays excellent spherical shape and exhibits good packing and shape stabilization properties. Secondly, the morphology, structure and properties of the fabricated MEPCM/down feather were tested, and the effect of the amount of MEPCM on the properties of the MEPCM/down feather was also investigated. The results show that the microcapsule adhered to the surface of the down feather uniformly and effectively, the fabricated MEPCM/down feather with 10% MEPCM has a melting temperature of 26.3 oC and a melting heat enthalpy of is 10.9 kJ/kg; meanwhile, it also demonstrates good hydrophilic property, bacteriostatic performance and thermal management capability, the thermal enthalpy could still reach 8.3 kJ/kg after washing 5 times.