Small laser engraving machine is widely used in advertising,handicraft processing and other industries.It is one of the important processing equipment.The existing industrial small laser engraving machine has a low intelligence degree and can not well monitor and analyze the operation state of the equipment.In view of the above problems,a small laser engraving machine with virtual and real synchronization was designed.Based on the concept of digital twin,the system platform was designed and built,the virtual model was established,the communication network based on OPC UA and other communication modes was constructed,and the laser engraving test was carried out by using the platform.The experimental results show that the du value controlling the laser intensity has a great influence on the engraving quality.Under the same du value and in a certain speed range,the engraving quality will improve with the decrease of the motor speed,but if the speed is too slow,there will be scoring and blackening.The experiment also verifies that the system realizes the coincidence of virtual and real motion positions within a certain accuracy range,and realizes the monitoring function of processing state and equipment state.