China　and　its　neighboring　countries　are　energy-dependent　regions　with　strong　resource　complementarity　and　significant　benefits　of　cross-border　grid　interconnection.　However,　the　power　interconnection　of　the　whole　Greater　China　region　is　still　far　from　being　realized.　In　addition　to　internal　factors,　external　geopolitical　issues,　grid　interconnection　technical　issues,　and　geographical　obstacles　also　pose　certain　security　challenges　to　the　creation　of　regional　power　grids.　To　quantify　the　security　of　power　grid　interconnection　between　China　and　neighboring　countries,　this　study　proposes　a　security　assessment　framework　for　the　power　interconnection　between　China　and　neighboring　countries　from　the　five　dimensions　of　politics,　economy,　law,　technology,　and　geographic　environment.　We　collected　the　observable　panel　data　of　China＇s　neighboring　countries　from　2011　to　2018　and　used　the　entropy　method　to　objectively　evaluate　the　security　of　power　interconnection　between　China　and　22　countries　in　the　four　regions　of　Northeast　Asia,　Central　Asia,　South　Asia,　and　Southeast　Asia.　The　study　proposes　the　feasible　paths　for　power　interconnection　between　China　and　surrounding　countries　based　on　the　investigation　on　the　interconnection　advantages　and　security　shortcomings　of　each　region　and　country　by　combining　the　endowment　of　renewable　energy　resources　in　each　region.　©　2022