In　this　experiment,　the　optical　parameters　of　optical　fiber　sensing　measurements　with　the　wavelength　division　multiplexer　(WDM)　and　Fiber　Bragg　grating　have　obtained　in　temperature-controlled　cabinet.　The　wavelength　division　multiplexer　device　not　only　make　different　wavelength　illuminant　input　at　the　same　time　be　possible,　but　also　can　achieve　multi-channel　output　based　on　the　feature　of　WDM.　We　design　and　put　forward　a　new　method　which　can　realize　various　parameters　measured　at　the　same　time,　such　as　temperature　and　the　refractive　index　or　stress　measurement.　In　addition,　it　can　measure　the　same　parameters　with　different　wavelengths　of　laser　at　the　same　time.　The　contrast　analysis　results　of　different　wavelengths　of　illuminant　on　the　same　parameter　sensitivity　and　reliability　of　the　measurement　will　use　to　provide　reference　to　design　the　same　illuminant　with　different　parameter　measurements.