In　this　paper,　the　affection　of　the　effective　index　and　normalized　frequency　with　the　temperature　have　researched　based　on　filling　methanol　in　photonics　crystal　fiber　with　the　hexagon　structure.　The　theoretical　model　of　the　total　internal　reflection　photonics　crystal　fiber　has　studied　on　plane-wave　expansion　technique.　The　results　of　the　total　internal　reflection　photonic　crystal　fiber　(TIR-PCF)　temperature　characteristics　have　obtained　in　filling　the　high　refractive　index　temperature　coefficient　liquid　material.　The　refractive　index　of　filling　liquid　and　temperature　affect　on　the　effective　refractive　index　and　normalized　frequency.　The　effective　refractive　index　will　reduce　and　normalized　frequency　will　increase　as　the　temperature　increases.　When　the　distance　between　adjacent　holes.　remains　unchanged,　the　ratio　of　diameter　of　holes　d　and.　of　d/Lambda　is　greater　and　the　input　wavelength　is　longer,　the　effective　refractive　index　with　the　temperature　becomes　the　most　sensitively.　The　properties　are　valuable　for　design　and　application　of　temperature　sensors.