In　this　paper,　we　consider　the　cooperative　robust　output　regulation　problem　for　a　class　of　nonlinear　multi-agent　systems　with　relative　degree　two　over　jointly　connected　switching　networks.　First,　by　attaching　each　subsystem　with　an　input　driven　filter,　we　obtain　an　extended　system.　Second,　by　integrating　the　distributed　observer　approach　and　the　distributed　internal　model　approach,　we　convert　the　cooperative　output　regulation　problem　of　the　original　system　into　a　distributed　robust　stabilization　problem　of　an　augmented　error　system　which　is　also　a　multi-agent　system.　Finally,　we　solve　the　original　problem　by　stabilizing　the　augmented　error　system　via　a　distributed　output　feedback　control　law.　©　2022　IEEE.