diff --git a/src/share/parameter/ob_parameter_seed.ipp b/src/share/parameter/ob_parameter_seed.ipp
index 705542737c..30a6f82016 100644
--- a/src/share/parameter/ob_parameter_seed.ipp
+++ b/src/share/parameter/ob_parameter_seed.ipp
@@ -1351,8 +1351,7 @@ DEF_INT(query_response_time_range_base, OB_TENANT_PARAMETER, "10", "[2,10000]",
     "The default value is False. Value: TRUE: trigger flush FALSE: do not trigger",
     ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_TIME(arbitration_timeout, OB_TENANT_PARAMETER, "5s", "[3s,]",
-        "timeout which will trigger automatic degrading when arbitration replica exists"
-        "Range: [3s,+∞]",
+        "The timeout before automatically degrading when arbitration member exists. Range: [3s,+∞]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_BOOL(_ignore_system_memory_over_limit_error, OB_CLUSTER_PARAMETER, "False",
          "When the hold of observer tenant is over the system_memory, print ERROR with False, or WARN with True",