In coal mines and other underground engineering,the installation accuracy of hydraulic support is one of the key factors to ensure safe production and operational efficiency.Laser rangefinder has become an important tool to improve the installation accuracy of hydraulic support because of its high precision and fast response.In hydraulic support installation,the laser rangefinder can be used to monitor and adjust the position of the support in real time,ensuring that each support is installed in accordance with the precise position and Angle,which greatly improves the safety and efficiency of the installation.Firstly,the working principle of laser rangefinder is introduced,then its application in the installation of hydraulic support is described,and finally,the installation accuracy improvement scheme of hydraulic support based on laser rangefinder is analyzed,including preparation work,equipment start-up and initialization,precision detection and adjustment.