Abstract: The truck dispatching system for open-pit mining is an integration of real time monitoring and dispatching system for mechanical equipment，production management statistics system and large mine truck tire monitoring system.On the background of this system，the structure and framework of the whole system is analyzed，and a series of key technologies of the system are discussed.As for the system architecture，a variety of wireless communication transmission modes based on C/S architecture to realize the interconnection between the system′s endpoints are proposed.As for the key technology of system construction，the vector map of the entire mine is displayed by independently developed VGMapGIS control.The network structure of the system is divided into 6 layers，and data communication is realized by using the custom data packet and 9 types of data flow and communication process.Database is used to store a series of mine data information.Finally，the application effect of the system is demonstrated through the practical application.The research results provide the pattern and support for the overall design idea，system structure and key technology of the intelligent and information system construction of the mine.It has a reference value for the construction of similar systems.

Key words: Dispatching system, Framework structure, Key techniques, Telecommunication, Data, Device, open-pit mine