With the development of the city

the subway

as a public transport facility with large traffic volume and accurate time

has become an important link and business card of the city.In this paper

through the combination of theory and practice

the new generation of metro 5G 4T4R technology is studied.Based on the uniform signal transmission characteristics of leaky cable

the optimization scheme of 5G 4T4R full coverage in metro track is proposed to maximize the efficiency of 4G/5G resources

quickly form the5G coverage advantage of metro communication network

and create a good reputation for the window scene of city business card through the 5G coverage application of metro.