It is instructive to measure and monitor the temperature field of the hot end surface of the aero-engine for prolonging its life.The article describes several temperature measurement methods,such as thermocouple,pyrometer,infrared thermal imager and temperature indicating paints,etc.The two temperature measurement techniques,multi-wavelength pyrometer and vision pyrometer are discussed in detail,by which the influence of emissivity of measured surface on the temperature measurement can be reduced greatly.Th...