In order to realize the real-time remote monitoring of multi-machine cooperative navigation operation, a Web-GIS based remote monitoring platform was designed and developed for cooperative operation of multi-machine. The platform mainly includes data transceiver, data storage, data query, data display and data analysis module. The data transceiver module adopts Socket technology, is used to receive real-time multi-machine position and attitude information and other operations, and also can send remote control commands to the vehicle terminal. The data storage module is responsible for storing the received job information into the corresponding SQL Server data table. The data query module is used to query the history information of multi-machine operation, and to present the query result in the web. The data display module combines Web-GIS technology, and can realize real-time visualization of multi-machine operation track through real-time interaction with Baidu map server. The data analysis module can analyze and process the location and attitude information of multi-machine in real time, and make decision analysis and task scheduling for each machine. The experimental results show that the platform has good stability, it can display multi-machine operation track and job information in real-time, and can realize multi machine task scheduling. Therefore, it can meet the demand of multi machine cooperative operation.