The stress state on the surface of material plays an important role on the erosion wear behavior of material. In this paper, the effects of erosion angle, erosion velocity and abrasive particle size on the erosion stress of glass-ceramic coating were discussed by finite element method. The volume wear rate of glass-ceramic coating under different erosion angle was measured by erosion tester at room temperature. The results show that the erosion stress of glass-ceramic coating increases with the increase of erosion angle, erosion velocity and abrasive particle size. Under the same erosion angle and erosion velocity, the effect of abrasive particle size on the improvement of coating erosion stress is significant. The erosion wear rate of glass-ceramic coating increases with the increase of erosion angle, and its change trend is basically consistent with the change trend of erosion stress, which verifies the reliability of finite element stress simulation.