轨道线路参数直接影响列车的运行安全和旅客的舒适性，目前轨检小车在高速铁路轨道施工及后期运营维护已广泛使用。本文结合广州南方高铁轨检小车在成渝客专、成贵高铁等项目施工过程中的轨道精测精调实践，主要对轨检小车在高速铁路轨道检测作业进行归纳总结，从轨道测量技术、轨检小车检测原理、作业流程、施工注意要点等多方面提出具有指导意义的结论。

Railway track line parameters directly affect operation safety and passenger comfort. At present, track inspection trolleys are widely used in high-speed railway track construction, operation, and maintenance. This paper summarizeS the operation of track inspection trolleys in high-speed railway track inspection, based on the accuracy tests and fine-tuning practices on trolleys from the Guangzhou South High-speed Railway. We ran the tests and practices in the construction of the Chengdu to Chongqing Express Railway and the Chengdu to Guiyang High-speed Railway. This paper also proposes guidelines for railway measuring technology, the working theory of track inspection trolleys, operation process, and attention points of railway construction.