diff --git a/beacon-chain/rpc/endpoints.go b/beacon-chain/rpc/endpoints.go
index 4fca3349df2c..fcb2f9a452e8 100644
--- a/beacon-chain/rpc/endpoints.go
+++ b/beacon-chain/rpc/endpoints.go
@@ -892,7 +892,7 @@ func (s *Service) beaconEndpoints(
 			methods: []string{http.MethodGet},
 		},
 		{
-			template: "/eth/v1/beacon/execution_payload_envelope/{block_root}",
+			template: "/eth/v1/beacon/execution_payload_envelope/{block_id}",
 			name:     namespace + ".GetExecutionPayloadEnvelope",
 			middleware: []middleware.Middleware{
 				middleware.AcceptHeaderHandler([]string{api.JsonMediaType, api.OctetStreamMediaType}),
diff --git a/beacon-chain/rpc/endpoints_test.go b/beacon-chain/rpc/endpoints_test.go
index 7bb0a8ec99c2..e115ce150b8b 100644
--- a/beacon-chain/rpc/endpoints_test.go
+++ b/beacon-chain/rpc/endpoints_test.go
@@ -33,7 +33,7 @@ func Test_endpoints(t *testing.T) {
 		"/eth/v1/beacon/states/{state_id}/pending_partial_withdrawals": {http.MethodGet},
 		"/eth/v1/beacon/states/{state_id}/pending_consolidations":      {http.MethodGet},
 		"/eth/v1/beacon/states/{state_id}/proposer_lookahead":          {http.MethodGet},
-		"/eth/v1/beacon/execution_payload_envelope/{block_root}":       {http.MethodGet},
+		"/eth/v1/beacon/execution_payload_envelope/{block_id}":         {http.MethodGet},
 		"/eth/v1/beacon/headers":                                       {http.MethodGet},
 		"/eth/v1/beacon/headers/{block_id}":                            {http.MethodGet},
 		"/eth/v2/beacon/blinded_blocks":                                {http.MethodPost},
diff --git a/beacon-chain/rpc/eth/beacon/handlers_gloas.go b/beacon-chain/rpc/eth/beacon/handlers_gloas.go
index bc4b657a91f5..8f39a79ef38e 100644
--- a/beacon-chain/rpc/eth/beacon/handlers_gloas.go
+++ b/beacon-chain/rpc/eth/beacon/handlers_gloas.go
@@ -20,9 +20,9 @@ func (s *Server) GetExecutionPayloadEnvelope(w http.ResponseWriter, r *http.Requ
 	ctx, span := trace.StartSpan(r.Context(), "beacon.GetExecutionPayloadEnvelope")
 	defer span.End()
 
-	blockID := r.PathValue("block_root")
+	blockID := r.PathValue("block_id")
 	if blockID == "" {
-		httputil.HandleError(w, "block_root is required in URL params", http.StatusBadRequest)
+		httputil.HandleError(w, "block_id is required in URL params", http.StatusBadRequest)
 		return
 	}
 
diff --git a/beacon-chain/rpc/eth/beacon/handlers_gloas_test.go b/beacon-chain/rpc/eth/beacon/handlers_gloas_test.go
index d73574ff15de..09b29e5606bd 100644
--- a/beacon-chain/rpc/eth/beacon/handlers_gloas_test.go
+++ b/beacon-chain/rpc/eth/beacon/handlers_gloas_test.go
@@ -79,8 +79,8 @@ func TestGetExecutionPayloadEnvelope_AcceptsSlotID(t *testing.T) {
 		FinalizationFetcher:    chain,
 	}
 
-	req := httptest.NewRequest(http.MethodGet, "http://example.com/eth/v1/beacon/execution_payload_envelope/{block_root}", nil)
-	req.SetPathValue("block_root", "177")
+	req := httptest.NewRequest(http.MethodGet, "http://example.com/eth/v1/beacon/execution_payload_envelope/{block_id}", nil)
+	req.SetPathValue("block_id", "177")
 	w := httptest.NewRecorder()
 	w.Body = &bytes.Buffer{}
 
@@ -96,8 +96,8 @@ func TestGetExecutionPayloadEnvelope_BlockNotFound(t *testing.T) {
 		},
 	}
 
-	req := httptest.NewRequest(http.MethodGet, "http://example.com/eth/v1/beacon/execution_payload_envelope/{block_root}", nil)
-	req.SetPathValue("block_root", "not-a-root")
+	req := httptest.NewRequest(http.MethodGet, "http://example.com/eth/v1/beacon/execution_payload_envelope/{block_id}", nil)
+	req.SetPathValue("block_id", "not-a-root")
 	w := httptest.NewRecorder()
 	w.Body = &bytes.Buffer{}
 
diff --git a/changelog/james-prysm_get-payload-envelope-block-id.md b/changelog/james-prysm_get-payload-envelope-block-id.md
new file mode 100644
index 000000000000..6e75c9958c36
--- /dev/null
+++ b/changelog/james-prysm_get-payload-envelope-block-id.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- changed /eth/v1/beacon/execution_payload_envelope/{block_root} to /eth/v1/beacon/execution_payload_envelope/{block_id} defined in beacon apis.
\ No newline at end of file