At present,domestic laser welding equipment generally uses embedded board-based control methods,which have the disadvantages of low stability and poor multi-axis linkage effects. This paper designs a standard laser welding equipment control system based on Siemens PLC with high stability and high accuracy. It breaks through key technologies such as the compilation and import of arbitrary plane interpolation curves,realizes linear and circular interpolation motion control between any two axes,and has the functions of importing and analyzing arbitrary curve files and G code online compilation to meet the equipment processing requirements.