diff --git a/vllm/engine/arg_utils.py b/vllm/engine/arg_utils.py
index 5bc22f36cbb6f..a411a465b0d57 100644
--- a/vllm/engine/arg_utils.py
+++ b/vllm/engine/arg_utils.py
@@ -299,6 +299,7 @@ class EngineArgs:
     data_parallel_size_local: Optional[int] = None
     data_parallel_address: Optional[str] = None
     data_parallel_rpc_port: Optional[int] = None
+    data_parallel_enable_hybrid_lb: Optional[int] = None
     data_parallel_backend: str = ParallelConfig.data_parallel_backend
     enable_expert_parallel: bool = ParallelConfig.enable_expert_parallel
     enable_eplb: bool = ParallelConfig.enable_eplb
@@ -633,6 +634,9 @@ class EngineArgs:
                                     default='mp',
                                     help='Backend for data parallel, either '
                                     '"mp" or "ray".')
+        parallel_group.add_argument(
+            "--data-parallel-hybrid-lb",
+            **parallel_kwargs["data_parallel_hybrid_lb"])
         parallel_group.add_argument(
             "--enable-expert-parallel",
             **parallel_kwargs["enable_expert_parallel"])
@@ -1097,7 +1101,6 @@ class EngineArgs:
             # but we should not do this here.
             placement_group = ray.util.get_current_placement_group()
 
-        DATA_PARALLEL_HYBRID_LB = True
         data_parallel_external_lb = self.data_parallel_rank is not None
         if data_parallel_external_lb:
             assert self.data_parallel_size_local in (1, None), (
@@ -1105,8 +1108,8 @@ class EngineArgs:
                 "is set")
             data_parallel_size_local = 1
             # Use full external lb if we have local_size of 1.
-            DATA_PARALLEL_HYBRID_LB = False
-        elif DATA_PARALLEL_HYBRID_LB:
+            self.data_parallel_hybrid_lb = False
+        elif self.data_parallel_hybrid_lb:
             assert self.data_parallel_start_rank is not None, (
                 "data_parallel_start_rank must be set to use "
                 "data_parallel_hybrid_lb.")
@@ -1116,7 +1119,7 @@ class EngineArgs:
             # Use full external lb if we have local_size of 1.
             if self.data_parallel_size_local == 1:
                 data_parallel_external_lb = True
-                DATA_PARALLEL_HYBRID_LB = False
+                self.data_parallel_hybrid_lb = False
             data_parallel_size_local = self.data_parallel_size_local
             self.data_parallel_rank = self.data_parallel_start_rank
         elif self.data_parallel_size_local is not None:
@@ -1178,7 +1181,7 @@ class EngineArgs:
             data_parallel_master_ip=data_parallel_address,
             data_parallel_rpc_port=data_parallel_rpc_port,
             data_parallel_backend=self.data_parallel_backend,
-            data_parallel_hybrid_lb=DATA_PARALLEL_HYBRID_LB,
+            data_parallel_hybrid_lb=self.data_parallel_hybrid_lb,
             enable_expert_parallel=self.enable_expert_parallel,
             enable_eplb=self.enable_eplb,
             num_redundant_experts=self.num_redundant_experts,