In　view　of　the　threats　and　uncertainties　faced　by　cities　and　the　problems　that　traditional　urban　emergency　management　is　difficult　to　solve,　this　paper　starts　from　the　development　of　new　generation　information　and　communication　technology,　and　explores　the　feasibility　of　intelligent　operation　and　maintenance　and　scientific　disaster　prevention　of　urban　infrastructure　system　supported　by　Internet　of　things,　big　data,　artificial　intelligence　technology,　5G,　digital　twin　technology　to　improve　the　robustness　of　cities　to　external　disturbances　Visual　management　and　enabling　the　dynamic　management　of　urban　security　risk　are　new　ways　to　improve　the　robustness　and　adaptability　of　the　urban,　and　build　a　security　and　resilience　urban　system　of　risk　emergency　monitoring,　early　warning　and　rescue　based　on　the　integration　of　perception,　communication　and　computing.