Temperature indicating paints (TIP) is a kind of special functional coating which measures the temperature distribution by judging the color changes of the paint film. It is widely applied in aero-engine testing to solve the problem of measuring the temperature profile of hot end components. In this paper, the methods of temperature indicating paints formula design, preparation process and painting process are studied firstly. Then a calibration system based on isotherm identification method has been specially designed to confirm the performance and characteristics of the paints. Certain type of multi-change TIP is taken as an example to illustrate the whole development process as well as the practical application of TIP in one aero-engine turbine component. It is proved that the paints attached firmly even in severe environment with high temperature and high velocity gas flushed and recorded the temperature profile successfully