In this paper,design an Internet-based monitoring platform system which is applied to resistance welding machine. The entire system makes full use of the site resistance welding machine networking system that Tianjin 707 Research Institute developed,and aim to supply the remote service of equipment monitoring and data query using internet communication technology. The platform is designed to be a modular and distributed system. The whole system adopts distributed and modular layout,takes the service oriented communication program as the core,designs the communication process among all modules,and provides an efficient and feasible implementation plan for remote monitoring and data query of resistance welding machine.