The traditional nondestructive technique can not realize the coatings quality evaluation on carbon fiber floors. Infrared thermal wave nondestructive technique was proposed to fulfill the coating thickness measurement and defects detection. The Infrared thermal wave nondestructive technique heats the sample actively, and uses an infrared camera to sequentially detect the surface temperature change. The thermal wave in the sample will change the conduction process once meeting the interface. Then the thickness can be measured based on the temperature break time. On the other hand, the thermal images captured by the focal plane infrared camera will display different depth information with interior defects. Coating thickness measurement samples were designed for each has three different thickness steps. The results show that in the range of 0.35～2 mm, the infrared thermal wave nondestructive measurement can realize the thickness measurement with error less then 0.1 mm and defects detection.