In order to research the environmental effects nates, an orthogonal test was carried out for T300/QY8911 on fatigue performance of CFRP composite lami- composite laminates. Standard specimens were prepared and then the tension fatigue life was tested in the given condition. To obtain the significance of the environmental effects such as coating, ultraviolet, humidity and their interactions on the tension fatigue life of T300/QY8911 composite laminates, the variance analysis method was applied. The results indicate that the environments of coating have highly significant effect on the fatigue life of the composite laminates. The envi- ronments of ultraviolet, interaction of coating and humidity have significant effect on the fatigue life of the com- posite laminates. Humidity, interaction of coating and ultraviolet, interaction of ultraviolet and humidity have no significant effect on the fatigue life of the composite laminates.%为研究环境因素对CFRP孔板疲劳性能的影响，针对T300／QY8911含中心孔层压板设计并开展了正交试验研究．试验中采用标准试件在给定环境条件下测试其拉伸疲劳寿命，并通过对正交试验结果的方差分析研究了有无涂层、紫外辐射、环境湿度等环境因素及其交互作用对T300／Y8911复合材料孔板拉伸疲劳寿命影响的显著性．研究表明：在紫外、涂层、湿度及任意二者的交互作用中，有无涂层对复合材料孔板的拉伸疲劳寿命影响高度显著，有无紫外及涂层与湿度的交互作用对复合材料孔板拉伸疲劳寿命影响显著；而湿度、紫外与涂层的交互作用及紫外与湿度的交互作用对复合材料孔板拉伸疲劳寿命的影响均不显著．
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