Abstract: In recent years, with the global consensus on green and low-carbon development, environmentally friendly and efficient laser cleaning technology has received widespread attention. In order to understand the current research status and trends of global laser cleaning technology, based on the patent data correlation and cluster analysis, the research progress of global laser cleaning technology was comprehensively revealed from the perspectives of technology application trends,country/regional distribution, R＆D institutions and industrial chain layout and research hotspots. The researches show that the United States, Japan and Germany are important sources of the technology, while China starts relatively late but catches up and is in a global leading position; South Korea, Russia, Australia and other countries belong to the blank market of China’s laser cleaning patent layout; both the light source side and the equipment side laser companies attach great importance to the patent layout in the field of laser cleaning technology; research hotspots focus on laser rust removal equipment and methods,portable laser cleaning devices, laser cleaning process technology and integrated laser cleaning devices.