The　Beijing-Tianjin-Hebei　(BTH)　integration　project　in　China　is　ambitious　which　offers　great　potential　with　its　promotion　of　sustainable　and　inclusive　development.　This　study　investigates　the　impact　of　regional　financial　development　on　economic　growth　in　the　BTH　region,　with　panel　data　collected　from　2007　to　2016.　Two　indicators　namely,　CREDIT　(denoted　as　regional　financial　development　depth)　and　BRANCH　(denoted　as　regional　financial　intermediaries　accessibility)　are　used　to　construct　an　integrated　regional　financial　development　indicator　through　the　spatial　econometrics　approach.　The　spatio-temporal　distribution　characteristics　of　regional　financial　development　and　economic　growth　are　analyzed.　Afterward,　the　global　Moran＇s　I　and　local　Getis-Ord　Gi*　statistics　are　applied　to　detect　the　presence　of　spatial　autocorrelation.　Finally,　a　spatial　Durbin　model　(SDM)　is　utilized　to　examine　spatial　distribution　and　spatial　association.　The　research　findings　of　this　study　suggest　that　the　CREDIT　has　a　positive　effect　on　regional　economic　growth,　while　the　BRANCH　has　no　impact　on　regional　economic　growth.　Moreover,　it　is　found　that　the　spatial　autocorrelation　of　CREDIT　and　BRANCH　are　statistically　significant.　The　CREDIT　of　the　neighboring　areas　has　a　negative　spatial　spillover　effect　on　economic　growth　of　one　area,　while　the　BRANCH　in　the　neighboring　areas　has　a　positive　effect　on　the　one　area.　The　results　and　research　findings　reported　in　this　article　highlight　the　role　of　regional　financial　development　in　improving　the　economic　growth　not　only　for　Chinese　policy　makers　but　also　for　other　countries＇　researchers　and　practitioners　in　this　field.　(C)　2019　Elsevier　B.V.　All　rights　reserved.