光纤传感器系统中，由于色散元件的存在，光源中心波长随温度的漂移将给系统带来误差．在对ＩＭ８５－Ｉ型光纤压力传感器系统的色散特性作了详细分析的基础上，采用软件补偿的方法以消除温度变化给系统带来的误差．实验结果表明，进行温度补偿后，系统的稳定性有明显的提高． Optical fiber sensor system, due to the presence of dispersion components, the center wavelength of the light source with the temperature drift will give the system error. Based on the detailed analysis of the dispersion characteristics of the IM85-I optical fiber pressure sensor system, the software compensation method is adopted to eliminate the error caused by the temperature change. Experimental results show that, after temperature compensation, the stability of the system is obviously improved.