This　paper　is　concerned　with　the　fixed-time　cooperative　relay　tracking　control　problem　for　a　set　of　planar　agents　in　a　surveillance　network.　The　plane　is　partitioned　into　multiple　＂capture　regions＂　by　using　the　Voronoi　partition　according　to　agents＇　positions.　Once　an　evader　enters　into　a　new　capture　region,　one　agent　of　the　tracer　team　stops　and　the　tracking　mission　is　relayed　to　another　one　who　is　in　charge　of　the　new　region.　As　a　result,　an　impulsive　model　is　proposed　to　describe　the　problem　and　a　distributed　fixed-time　cooperative　relay　control　strategy　is　provided　that　is　not　dependent　on　initial　condition.　Numerical　simulations　are　provided　to　demonstrate　the　validness　of　the　cooperative　relay　tracking　scheme.