In　this　article,　the　hybrid　cooperative　output　regulation　problem　for　linear　multiagent　systems　is　formulated　and　investigated,　where　both　the　exosystem　and　the　agent　dynamics　are　hybrid　linear　systems　with　periodic　jumps.　To　solve　this　problem,　a　distributed　observer　approach　is　proposed,　which　consists　of　two　steps.　First,　a　novel　output-based　hybrid　distributed　observer　is　designed　which　can　achieve　distributed　information　estimation　for　various　practical　hybrid　exosystems.　Second,　by　incorporating　a　decentralized　hybrid　output　feedback　control　law　with　the　proposed　hybrid　distributed　observer,　a　hybrid　distributed　output　feedback　control　law　is　synthesized　to　solve　the　hybrid　cooperative　output　regulation　problem.　In　comparison　with　the　existing　works　targeting　purely　continuous-time　multiagent　systems,　the　simplified　forms　for　both　the　hybrid　distributed　observer　and　the　hybrid　output　feedback　control　law　proposed　in　this　article　exhibit　prominent　advantages　from　various　aspects,　such　as　robustness　against　intermittent　communication　links　and　the　sampled　measurement　of　system　output　for　feedback.　The　effectiveness　of　the　theoretical　results　is　validated　by　solving　the　output　synchronization　problem　for　a　hybrid　electrical　system　made　up　of　multiple　heterogeneous　RC　circuits,　where　the　capacitors　are　switched　on　and　off　periodically.