Research conclusions:(1)Public security wireless communication system scheme of urban rail transit should be consistent with the urban existing public security wireless communication system，and government affairs wireless communication system of city rail.(2)Centralized way is recommended，which combining the scheme of wired and wireless introduction that wired scheme is given priority to and wireless solutions is standby.(3)At the station platform layer and the underground tunnel，the leakage coaxial cable should be applied to for field coverage. At the station hall layer，the way of ceiling-mounted antenna should be adopted for coverage.(4)Broadband multimedia cluster, such as TD-LTE with independent intellectual property，is the future development direction of public security wireless commumcation system m our country.