A　dual-phase　change　material　(DPCM)　containing　polyethylene　glycol　(PEG)　400/expanded　graphite　(EG)　and　PEG1500/EG　with　both　high　and　low-temperature　regulation　capacities　was　prepared.　It　was　added　as　an　additive　to　the　NovaChip-Type　C　asphalt　mixtures.　Laboratory　and　field　temperature　regulation　tests　were　designed.　The　images　taken　by　SEM　showed　that　PEG　was　fully　adsorbed　by　EG　and　the　structure　of　DPCM　was　stable.　The　test　results　showed　the　DPCM　has　good　durability　in　the　cyclic　phase　change　process.　The　modified　asphalt　binders　with　different　DPCM　content　showed　different　heat　storage　capacity.　The　results　of　temperature　regulation　tests　showed　that　the　addition　of　DPCM　effectively　reduced　the　temperature　change　rate　of　asphalt　mixtures.　With　1.88%　DPCM,　the　extremum　of　high　temperature　of　asphalt　mixtures　reduced　by　2.3　degrees　C　while　the　extremum　of　low　temperature　increased　by　2.0　degrees　C.　In　terms　of　road　performance,　the　cracking　resistance　at　low　temperature　of　asphalt　mixtures　gradually　improved　with　the　increase　of　DPCM　content.　Meanwhile,　the　rutting　resistance　at　high　temperature　and　water　damage　resistance　still　met　the　requirements　of　the　specification.　The　DPCM　had　a　good　effect　on　restraining　the　occurrence　of　road　diseases　caused　by　temperature　and　prolonging　the　service　life　of　the　road.