With　the　growing　spiritual　needs　of　people,　new　generations　of　digital　technologies,　such　as　the　Internet　of　Things,　computational　power　network,　artificial　intelligence,　human-computer　interactions,　blockchain,　digital　twins,　are　continuously　evolving　and　innovating.　These　technologies　are　changing　people＇s　way　of　life　and　production,　as　well　as　the　economic　and　social　forms　that　support　it.　The　merging　and　innovation　of　digital　technology　and　human　society,　and　humans　are　moving　from　the　information-physical　system　CPS　(Cyber-Physical　Systems)　to　the　human-machine-integrated　society-level　information-physical　system　CPHS　(Cyber-Physical　&　Human　Systems)　towards　the　metaverse.　Meanwhile,　the　continuous　iteration　and　innovation　of　Internet　is　also　moving　from　traditional　Internet　platform　models　to　Web3.0　with　digital　production,　digital　consumption,　and　new　virtual　spaces　in　three　dimensions　as　the　main　economic　and　social　forms　based　on　blockchain　technology.　In　the　metaverse　and　Web3.0,　artificial　intelligence-generated　content　(AIGC)　plays　a　powerful　and　productive　tool　role,　AIGC　being　not　only　a　production　tool　for　the　metaverse　and　Web3.0,　but　also　a　new　paradigm　for　artificial　intelligence　development.　This　paper　analyzes　the　origin　of　the　metaverse,　the　motivations　behind　the　development　of　Web3.0,　and　the　new　model　of　AIGC,　detailed　discussions　of　the　technical　systems　and　mutual　relations　of　metaverse　and　Web3.0,　and　finally　discusses　the　development　and　challenges　of　metaverse　and　Web3.0　and　AIGC.　©　2023　IEEE.