The packaging technology of fiber Bragg gratings (FBG) has a significant impact on sensor performance. So far, two packaging methods most commonly used in the design of FBG sensors are the packaging after all grating pasting and the two-end pasting-packaging after grating pretension. As for these two packaging ways, the key parameters determining the performance of a sensor, such as sensitivity, linearity, repeatability, creep and temperature-compensation, are investigated experimentally. For each packaging way, three FBGs with the same parameters are arranged on the same equal-strength cantilever. A free and bare grating is used as a temperature reference for a contrast experiment of strain sensitivity and temperature-compensation characteristics. The experimental results show that the six FBGs under the two packaging ways have good consistency in sensitivity, linearity and repeatability, and also good creep resistance. In the test of temperature-compensation, the grating self-differential compensation effect under the same packaging way is superior to the differential compensation from the reference bare FBG. The self-differential compensation effect under the two-end pasting packaging way is the best with the wavelength shift difference less than 9 pm, better than that under the packaging way after all grating pasting (within 20 pm). In contrast, the differential compensation effect under the two-end pasting-packaging way from the reference bare grating is the worst with the maximum value up to 53 pm.