Nitride coatings have been applied and regarded as key erosion resistant coating system for aircraft compressor. In order to consider the effect of thermophysical and chemical environment as well as stress environment, it was important to study the coupling behavior of corrosion and erosion for these nitride coatings. In this work, the erosion behaviors of original coating, the hot corrosion coating and the salt spray corrosion coating were compared for both TiN/Ti coating and TiN/ZrN coating. For TiN/Ti coating, the pittings caused by coating defects were weak regions to erosion. The salt spray TiN/Ti coating had lower adhesion and erosion resistance than original coating and hot corroded coating. For TiN/ZrN coating, loose corrosion and oxide products formed on the surface of droplets during hot corrosion, so they were more easier to fall off during erosion. Moreover, the generative interlayer thermal stress in hot corrosion process weakened the adhesion between the coating and substrate. The surface of the hot corrosion coating showed the most severe spiral peeling after erosion, and the hot corroded TiN/ZrN coating had lower adhesion and erosion resistance than original coating and salt spray corroded coating.