Traffic jam,low transportation efficiency,high safety risks and poor location precision of vehicles and personnel take place in the main ramp in the underground mine of Jinfeng Gold Mine.In light of that,new digitalized and informationized technology is used to design a set of ramp transportation security control system.The system uses advanced underground large-scale optical fiber ring network technology,high-precision locating technology for underground trackless transportation vehicles,vehicle-mounted terminal technology for underground trackless transportation vehicles,fleet flow control technology for underground trackless transportation vehicles,and production assignment technology of underground trackless transportation vehicles,and performs well in actual application,effectively improves the problems above,increases the annual pass capacity on the main ramp by 5 %,and creates 38.98 million yuan more profits for the enterprise annually.