diff --git a/src/share/parameter/ob_parameter_seed.ipp b/src/share/parameter/ob_parameter_seed.ipp
index f6b055156b527adb0594d15f5fa5a808d03b2ee2..be59c5595ccdd711b16025323b344f0e7053818d 100644
--- a/src/share/parameter/ob_parameter_seed.ipp
+++ b/src/share/parameter/ob_parameter_seed.ipp
@@ -62,8 +62,8 @@ DEF_TIME(internal_sql_execute_timeout, OB_CLUSTER_PARAMETER, "30s", "[1000us, 10
 DEF_INT(net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,64]",
     "the number of rpc/mysql I/O threads for Libeasy. Range: [0, 64] in integer, 0 stands for max(6, CPU_NUM/8)",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
-DEF_INT(high_priority_net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,100]",
-    "the number of rpc I/O threads for high priority messages, 0 means set off. Range: [0, 100] in integer",
+DEF_INT(high_priority_net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,64]",
+    "the number of rpc I/O threads for high priority messages, 0 means set off. Range: [0, 64] in integer",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
 DEF_INT(tenant_task_queue_size, OB_CLUSTER_PARAMETER, "65536", "[1024,]",
     "the size of the task queue for each tenant. Range: [1024,+∞)",