Quantitative　assessment　of　the　impact　of　the　Belt　and　Road　Initiative　on　the　economic　development　of　countries　along　the　Belt　and　Road　is　one　of　the　foundations　for　measuring　the　development　status　of　the　Belt　and　Road　Initiative　and　formulating　future　development　plans.　With　the　steady　implementation　of　the　Belt　and　Road　Initiative,　the　economies　of　countries　along　the　Belt　and　Road　have　achieved　significant　improvement　in　many　fields,　and　the　disadvantages　of　the　existing　evaluation　methods　lacking　the　support　of　corresponding　data　models　have　become　increasingly　apparent.　Therefore,　in　view　of　the　above　problems,　this　paper　proposes　an　economic　impact　assessment　method　of　the　Belt　and　Road　Initiative　based　on　the　GVAR　hybrid　model,　which　realizes　the　quantitative　analysis　of　the　economic　impact　of　the　Belt　and　Road　Initiative.　Firstly,　the　GVAR　model　is　constructed　based　on　the　VAR　model.　Then,　on　the　basis　of　the　GVAR　model,　the　weight　matrix　W,　which　is　used　to　represent　the　interdependence　between　countries,　is　introduced　to　construct　a　hybrid　model　to　represent　national　GDP.　Then,　considering　the　impact　model,　the　dynamic　response　of　GDP　to　economic　influencing　factors　is　mapped　to　the　dynamic　response　of　GVAR　model　to　shocks,　realizing　the　assessment　of　the　economic　impact　of　the　Belt　and　Road　Initiative.　Finally,　taking　Australia　and　Pakistan　as　examples,　this　paper　discusses　the　dynamic　impact　of　inflation,　exchange　rate　fluctuations,　credit　activities　and　net　foreign　assets　on　GDP,　and　quantitatively　evaluates　the　existing　construction　achievements　of　the　Belt　and　Road　Initiative,　which　provides　a　solid　theoretical　basis　and　data　support　for　the　economic　strategy　adjustment　of　the　countries　along　the　Belt　and　Road　under　the　background　of　globalization.　©　2024　Copyright　held　by　the　owner/author(s).