本文报道了我们对于全光纤型光纤电流传感器试验样机在户外进行长期稳定性实验的结果。主要是环境温度的起伏对系统各部分的影响。实验结果表明:全光纤型光纤电流传感器其长期稳定性不能满足0.5％测量精度的要求,其主要原因是光纤质量不稳定,长期使用后其性能有较大变化。 This paper reports the results of our long-term stability experiments outdoors for fiber-optic fiber current sensor test prototypes. Mainly the ups and downs of the ambient temperature on the various parts of the system. The experimental results show that the long-term stability of the all-fiber optical fiber current sensor can not meet the requirement of 0.5% measurement accuracy. The main reason is that the optical fiber quality is unstable, and its performance changes greatly after long-term use.