diff --git a/conf/sce.conf b/conf/sce.conf
index 563d9df..68a119c 100644
--- a/conf/sce.conf
+++ b/conf/sce.conf
@@ -22,6 +22,7 @@ foreign_cont_dir=resource/foreign_files
 redis_db_idx=0
 redis_server=127.0.0.1
 redis_port_range=6379 
+max_chaining_size=32
 
 [packet_io]
 # bypass_all_traffic:1 NF2NF and SF2SF
diff --git a/platform/include/policy.h b/platform/include/policy.h
index 3640511..c5293e0 100644
--- a/platform/include/policy.h
+++ b/platform/include/policy.h
@@ -119,6 +119,7 @@ void policy_enforcer_destory(struct policy_enforcer *enforcer);
 // return  0 : success
 // return -1 : error
 int policy_enforcer_register(struct policy_enforcer *enforcer);
+int policy_enforce_max_chaining_size(struct policy_enforcer *enforcer);
 
 struct selected_chaining *selected_chaining_create(int chaining_size);
 void selected_chaining_destory(struct selected_chaining *chaining);
diff --git a/platform/src/packet_io.cpp b/platform/src/packet_io.cpp
index 687ca3a..17c0ead 100644
--- a/platform/src/packet_io.cpp
+++ b/platform/src/packet_io.cpp
@@ -1142,7 +1142,7 @@ static int handle_session_opening(struct metadata *meta, struct ctrl_pkt_parser
     s_ctx->first_ctrl_pkt.addr_string = addr_tuple4_to_str(&(s_ctx->first_ctrl_pkt.tuple4));
     s_ctx->first_ctrl_pkt.header_data = strndup(meta->raw_data, meta->l7_offset);
     s_ctx->first_ctrl_pkt.header_len = meta->l7_offset;
-    s_ctx->chaining = selected_chaining_create(128);
+    s_ctx->chaining = selected_chaining_create(policy_enforce_max_chaining_size(thread->ref_enforcer));
 
     LOG_INFO("%s: session %lu %s active first", LOG_TAG_PKTIO, s_ctx->session_id, s_ctx->first_ctrl_pkt.addr_string);
 
diff --git a/platform/src/policy.cpp b/platform/src/policy.cpp
index a8a22e3..5823806 100644
--- a/platform/src/policy.cpp
+++ b/platform/src/policy.cpp
@@ -47,6 +47,7 @@ struct policy_config
     int redis_db_idx;
     char redis_server[2048];
     char redis_port_range[2048];
+    int max_chaining_size;
 };
 
 struct policy_enforcer
@@ -312,6 +313,7 @@ static void policy_enforcer_config(const char *profile, struct policy_config *co
     MESA_load_profile_int_def(profile, "MAAT", "redis_db_idx", &(config->redis_db_idx), 0);
     MESA_load_profile_string_def(profile, "MAAT", "redis_server", config->redis_server, sizeof(config->redis_server), "127.0.0.1");
     MESA_load_profile_string_def(profile, "MAAT", "redis_port_range", config->redis_port_range, sizeof(config->redis_server), "6379");
+    MESA_load_profile_int_def(profile, "MAAT", "max_chaining_size", &(config->max_chaining_size), 32);
 
     if (strlen(config->accept_path))
     {
@@ -339,6 +341,7 @@ static void policy_enforcer_config(const char *profile, struct policy_config *co
     LOG_DEBUG("%s: MAAT->redis_db_idx       : %d", LOG_TAG_POLICY, config->redis_db_idx);
     LOG_DEBUG("%s: MAAT->redis_server       : %s", LOG_TAG_POLICY, config->redis_server);
     LOG_DEBUG("%s: MAAT->redis_port_range   : %s", LOG_TAG_POLICY, config->redis_port_range);
+    LOG_DEBUG("%s: MAAT->max_chaining_size  : %d", LOG_TAG_POLICY, config->max_chaining_size);
 }
 
 static void chaining_param_new_cb(int table_id, const char *key, const char *table_line, MAAT_PLUGIN_EX_DATA *ad, long argl, void *argp)
@@ -1253,6 +1256,11 @@ void policy_enforcer_destory(struct policy_enforcer *enforcer)
     }
 }
 
+int policy_enforce_max_chaining_size(struct policy_enforcer *enforcer)
+{
+    return enforcer->config.max_chaining_size;
+}
+
 // return  0 : success
 // return -1 : error
 int policy_enforcer_register(struct policy_enforcer *enforcer)