diff --git a/src/http/ngx_http_accounting_module.c b/src/http/ngx_http_accounting_module.c
index 23a5fc3..ecc62d2 100644
--- a/src/http/ngx_http_accounting_module.c
+++ b/src/http/ngx_http_accounting_module.c
@@ -237,7 +237,6 @@ ngx_http_accounting_request_handler(ngx_http_request_t *r)
     ngx_time_t                  *tp = ngx_timeofday();
     ngx_msec_int_t               ms = 0;
     ngx_http_upstream_state_t   *state;
-
     accounting_id = ngx_http_accounting_get_accounting_id(r);
     if (accounting_id == NULL) { return NGX_ERROR; }
 
@@ -251,6 +250,27 @@ ngx_http_accounting_request_handler(ngx_http_request_t *r)
 
     amcf->current->updated_at = ngx_timeofday();
 
+    if (0 == metrics->server_addr.len) {
+        u_char   var_name_buf[256] = {0};
+        ngx_str_t                   server_addr_var_name = ngx_string("server_addr");
+        ngx_uint_t                  server_addr_key = ngx_hash_strlow(var_name_buf, server_addr_var_name.data, server_addr_var_name.len);
+        ngx_http_variable_value_t*  server_addr_val = ngx_http_get_variable(r, &server_addr_var_name, server_addr_key);
+
+        if (NULL == server_addr_val)  {
+            // ngx_log_error(NGXTA_LOG_LEVEL, amcf->log, ngx_errno,
+            //             ngx_realpath_n " get server_addr failed");
+            return NGX_ERROR;
+        } else {
+            // ngx_log_error(NGXTA_LOG_LEVEL, amcf->log, 0,
+            //             ngx_realpath_n " %s", server_addr_val->data);
+        }
+        metrics->server_addr.data = ngx_calloc(server_addr_val->len + 1, amcf->log);
+        if (NULL == metrics->server_addr.data) {
+            return NGX_ERROR;
+        }
+        memcpy(metrics->server_addr.data, server_addr_val->data, server_addr_val->len);
+        metrics->server_addr.len = server_addr_val->len;
+    }
     metrics->nr_entries += 1;
     metrics->bytes_in += r->request_length;
     metrics->bytes_out += r->connection->sent;
diff --git a/src/ngx_traffic_accounting.h b/src/ngx_traffic_accounting.h
index 462becf..6046d78 100644
--- a/src/ngx_traffic_accounting.h
+++ b/src/ngx_traffic_accounting.h
@@ -24,6 +24,7 @@ typedef struct {
     ngx_rbtree_node_t   rbnode;
 
     ngx_str_t           name;
+    ngx_str_t           server_addr;
 
     ngx_uint_t          nr_entries;
     ngx_uint_t          bytes_in;
diff --git a/src/ngx_traffic_accounting_log.c b/src/ngx_traffic_accounting_log.c
index 9b4cd46..652cefb 100644
--- a/src/ngx_traffic_accounting_log.c
+++ b/src/ngx_traffic_accounting_log.c
@@ -35,9 +35,10 @@ ngx_traffic_accounting_log_metrics(void *val, void *para1, void *para2,
     last = msg_buf + NGX_MAX_ERROR_STR;
 
     p = ngx_slprintf(p, last,
-        "pid:%i|from:%i|to:%i|accounting_id:%V|%s:%ui|bytes_in:%ui|bytes_out:%ui|latency_ms:%ui|upstream_latency_ms:%ui",
+        "pid:%i|from:%i|to:%i|server_addr:%V|accounting_id:%V|%s:%ui|bytes_in:%ui|bytes_out:%ui|latency_ms:%ui|upstream_latency_ms:%ui",
         ngx_getpid(),
         created_at->sec, updated_at->sec,
+        &metrics->server_addr,
         &metrics->name, entry_n,
         metrics->nr_entries,
         metrics->bytes_in, metrics->bytes_out,
diff --git a/src/ngx_traffic_accounting_period_metrics.c b/src/ngx_traffic_accounting_period_metrics.c
index 7376ad9..d454a3c 100644
--- a/src/ngx_traffic_accounting_period_metrics.c
+++ b/src/ngx_traffic_accounting_period_metrics.c
@@ -161,6 +161,7 @@ ngx_traffic_accounting_period_rbtree_iterate(ngx_traffic_accounting_period_t *pe
             ngx_free(n->nr_status);
             ngx_free(n->nr_upstream_status);
             ngx_free(n->name.data);
+            ngx_free(n->server_addr.data);
             ngx_free(n);
 
             goto done;