diff --git a/onnxruntime/core/providers/tensorrt/tensorrt_execution_provider.cc b/onnxruntime/core/providers/tensorrt/tensorrt_execution_provider.cc
index cd4aa45f83bc8..79f84864a5788 100644
--- a/onnxruntime/core/providers/tensorrt/tensorrt_execution_provider.cc
+++ b/onnxruntime/core/providers/tensorrt/tensorrt_execution_provider.cc
@@ -1829,6 +1829,10 @@ TensorrtExecutionProvider::GetCapability(const GraphViewer& graph,
       if (sub_graphs.size() != 0) {
         bool all_subgraphs_are_supported = true;
         for (auto sub_graph : sub_graphs) {
+          // TRT EP should consider the empty subgraph is fully supported by TRT.
+          if (sub_graph->CreateGraphViewer()->NumberOfNodes() == 0) {
+            continue;
+          }
           if (!AllNodesAssignedToSpecificEP(*(sub_graph->CreateGraphViewer()), kTensorrtExecutionProvider)) {
             all_subgraphs_are_supported = false;
             break;
@@ -1896,27 +1900,33 @@ TensorrtExecutionProvider::GetCapability(const GraphViewer& graph,
       auto sub_graphs = graph.ParentNode()->GetSubgraphs();
       for (auto sub_graph : sub_graphs) {
         if (sub_graph.get() != &graph.GetGraph()) {
-          auto sub_graph_veiwer = sub_graph->CreateGraphViewer();
-          const int number_of_ort_subgraph_nodes = sub_graph_veiwer->NumberOfNodes();
+          auto sub_graph_viewer = sub_graph->CreateGraphViewer();
+          const int number_of_ort_subgraph_nodes = sub_graph_viewer->NumberOfNodes();
           std::vector<size_t> subgraph_nodes_vector(number_of_ort_subgraph_nodes);
           std::iota(std::begin(subgraph_nodes_vector), std::end(subgraph_nodes_vector), 0);
           SubGraphCollection_t parser_subgraph_nodes_vector = {{subgraph_nodes_vector, false}};
           bool subgraph_early_termination = false;
 
-          // Another subgraph of "If" control flow has been parsed by GetCapability before and all subgraph's nodes assigned to TRT EP.
-          if (AllNodesAssignedToSpecificEP(*sub_graph_veiwer, kTensorrtExecutionProvider)) {
+          // Another subgraph of "If" control flow op has no nodes.
+          // In this case, TRT EP should consider this empty subgraph is fully supported by TRT.
+          if (sub_graph_viewer->NumberOfNodes() == 0) {
+            all_subgraphs_are_supported = true;
+            break;
+          }
+          // Another subgraph of "If" control flow op has been parsed by GetCapability before and all subgraph's nodes assigned to TRT EP.
+          else if (AllNodesAssignedToSpecificEP(*sub_graph_viewer, kTensorrtExecutionProvider)) {
             all_subgraphs_are_supported = true;
             break;
           }
           // Another subgraph of "If" control flow has been parsed by GetCapability and not all subgraph's nodes assigned to TRT EP.
           // (Note: GetExecutionProviderType() returns "" meaning node has not yet been assigned to any EPs)
-          else if (!AllNodesAssignedToSpecificEP(*sub_graph_veiwer, "")) {
+          else if (!AllNodesAssignedToSpecificEP(*sub_graph_viewer, "")) {
             all_subgraphs_are_supported = false;
             break;
           }
 
           // Another subgraph of "If" control flow has not yet been parsed by GetCapability.
-          subgraph_supported_nodes_vector = GetSupportedList(parser_subgraph_nodes_vector, 0, max_partition_iterations_, *sub_graph_veiwer, &subgraph_early_termination);
+          subgraph_supported_nodes_vector = GetSupportedList(parser_subgraph_nodes_vector, 0, max_partition_iterations_, *sub_graph_viewer, &subgraph_early_termination);
           all_subgraphs_are_supported = IsSubGraphFullySupported(subgraph_supported_nodes_vector, number_of_ort_subgraph_nodes);
           break;
         }