分析了光纤接续损耗产生的原因，针对施工现场中非理想的条件下，对被连接光纤的几何结构偏差、光纤材料工艺不均匀性、光学特性等方面的偏差进行合理的配置，利用精选的接续工具结合实践经验、操作技巧等施工技术最大限度地降低国光纤本身缺陷及施工人员的人为因素及对接续损耗的影响。 The causes of the optical fiber splice loss are analyzed. According to the non-ideal conditions in the construction site, the deviations of the geometrical structure of the connected optical fiber, the technological inhomogeneity of the optical fiber material and the optical properties are properly configured. Connecting tools combined with practical experience, operating skills and other construction techniques to minimize the country’s own optical fiber defects and construction workers of human factors and the impact on the continued loss.