Abstract: The application of patent analysis method can predict the development trend of product technology, and provide guidance for enterprises to build technical advantages and improve patent layout.Patsnap database was used as the source to study patents of hot melt butt welding machines, and patents application status, regional distribution, patent technology, high value patent and patent map were also analyzed.The result shows that the number of patents of hot melt butt welding machine is growing rapidly.The future strategy is to transform from large number of scattered and low-level patents to an appropriate amount of concentrated, high-level and basic core patents.Relevant enterprises shall seize the opportunity to carry out core technology research, apply for corresponding patents and strengthen patent management.