Abstract: Adopting the ceramic packaging technology, we designed and produced several fiber Bragg grating (FBG) temperature sensor probes to test the sensitivity, stability, repeatability, speed of response of the probe and other parameters affected by the packaging processed form. The parameters of FBG were analyzed by a water bath apparatus with constant temperature to calibrate the thermal response of FBG with the central wavelength around 1 540 nm and 1 550 nm, and the temperature increased from 36℃ to 45℃. The experiment results showed that the scalar efficiency of the FBG probe with ceramics package was 9.815 pm/℃ with standard deviation of 0.08 ℃.