The steel capillary packaging technique for fiber Bragg grating（FBG）sensor was developed in consideration of bare optical fiber being fragility,and the strain and temperature characteristics of the packaged FBG sensors were experimentally and theoretically studied on material mechanics multifunctional experimental platform and in constant temperature box.Compared with the experimental results of the bare FBG，the strain sensing property of the FBG sensor packaged by the steel capillary is nearly the same as that of the bare FBG，however the temperature sensing ability of the packaged FBG sensor is improved and the temperature sensitivity coefficient is 2.93 times larger than that of the bare FBG.And the linearity and repetition is very well.We offer a nice packaging method for FBG which used in temperature measure field.