diff --git a/python/sglang/srt/disaggregation/ascend/transfer_engine.py b/python/sglang/srt/disaggregation/ascend/transfer_engine.py
index 435ab8a1d..6ba4cbecc 100644
--- a/python/sglang/srt/disaggregation/ascend/transfer_engine.py
+++ b/python/sglang/srt/disaggregation/ascend/transfer_engine.py
@@ -48,10 +48,12 @@ class AscendTransferEngine(MooncakeTransferEngine):
         else:
             logger.error(f"Unsupported DisaggregationMode: {disaggregation_mode}")
             raise ValueError(f"Unsupported DisaggregationMode: {disaggregation_mode}")
-        self.session_id = NetworkAddress(
-            self.hostname, self.engine.get_rpc_port()
-        ).to_host_port_str()
+        rpc_port = self.engine.get_rpc_port()
+        self.session_id = NetworkAddress(self.hostname, rpc_port).to_host_port_str()
         self.initialize()
+        if rpc_port == 0:
+            rpc_port = self.engine.get_rpc_port()
+            self.session_id = NetworkAddress(self.hostname, rpc_port).to_host_port_str()
 
     def initialize(self) -> None:
         from sglang.srt.distributed.parallel_state import (