本文从理论和实验上研究了一种阶梯反射式光纤传感探头,用平面和球面端光纤构成探头进行的试验结果表明,这种探头具有良好的光学补偿作用,同时,还有较宽的测量范围,并且其批量制造工艺容易控制,为这种探头的广泛应用奠定了良好的基础. In this paper, a kind of step reflection type optical fiber sensing probe is theoretically and experimentally studied. The test results of the probe made of plane and spherical end fibers show that this kind of probe has a good optical compensation function. At the same time, there is a wide range of measurement Range, and its bulk manufacturing process easy to control, for the extensive application of this probe has laid a good foundation.