In the manufacturing industry of rail transit,due to a large number of and wide distribution of welding equipment,it is difficult to supervise and trace the production management and welding quality. In order to strengthen the management of welding process in the aluminum alloy plant,a network was build between the server and welding equipment to achieve the factory LAN and welding equipment information interoperability based on the manual welding machine as the smallest unit in this paper. Through the construction of intelligent management system of network welding data,combination of factors such as cost optimization and examination basis,the efficiency and the quality of products,can be improved. Meanwhile,the timeliness,the reliability and the accuracy of information and communication also can be ensured.