In　this　article,　a　distributed　observer-based　fault-tolerant　control　strategy　is　proposed　for　interconnected　systems,　in　which　sensor　faults,　actuator　faults,　and　disturbances　are　tackled.　First,　by　augmenting　the　original　system　into　a　new　descriptor　system,　a　sliding　mode　observer　(SMO)　design　scheme　that　considered　the　associated　interconnection　information　among　subsystems　is　proposed.　Then,　sensor　faults,　actuator　faults,　and　disturbances　are　reconstructed,　and　the　accuracy　of　the　reconstruction　of　interconnected　systems　is　improved.　Second,　based　upon　the　proposed　SMO,　a　distributed　SMO-based　fault-tolerant　controller　is　developed　to　compensate　sensor　faults,　actuator　faults,　and　disturbances　for　considered　interconnected　systems.　Then,　the　stabilization　of　the　overall　closed-loop　interconnected　systems　can　be　guaranteed.　Finally,　a　numerical　example　with　two　subsystems　and　the　meta　aircraft　with　multiple　aircraft　joined　are　utilized　to　demonstrate　the　effectiveness　of　the　proposed　theoretical　results.