With　the　development　of　smart　grid　technology,　flexible　resources　like　renewable　energy　sources　(RESs)　and　controllable　loads　(CLs)　are　widely　utilized　to　improve　distribution　system　resilience.　However,　the　control　strategy　and　aggregation　method　of　distributed　RESs　and　CLs　pose　several　challenges,　such　as　increasing　complexity　problem　of　optimization　models.　Therefore,　this　paper　proposes　an　optimization　scheme　for　critical　load　restoration　with　coordinated　control　strategy,　as　well　as　distributed　energy　resource　management　systems　(DERMSs)　and　load　aggregators　(LAs).　Besides,　a　DERMSs-distributed　system　operators　(DSO)-LAs　interaction　framework　is　also　formulated.　Finally,　the　proposed　optimization　method　is　validated　on　a　modified　IEEE-37　node　test　feeder　to　verify　the　effectiveness　that　aggregated　RESs　and　loads　can　significantly　improve　the　critical　load　restoration　effectiveness.　©　2022　IEEE.