diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 4e7ea16..2f29545 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -20,6 +20,8 @@
   unknown-command guidance.
 - Command output text for common interactive commands is now centralized in
   the i18n table instead of being scattered through command flow logic.
+- TUI title-bar status labels, including online count, mute marker, and help
+  hint, now follow the session UI language.
 
 ### Changed
 - NORMAL mode now opens at the latest visible messages instead of the oldest
diff --git a/include/i18n.h b/include/i18n.h
index aa7fa15..bf56f2e 100644
--- a/include/i18n.h
+++ b/include/i18n.h
@@ -16,6 +16,9 @@ typedef enum {
     I18N_COMMAND_OUTPUT_TITLE,
     I18N_MOTD_TITLE,
     I18N_MOTD_CONTINUE_HINT,
+    I18N_TITLE_ONLINE_FORMAT,
+    I18N_TITLE_MUTED,
+    I18N_TITLE_HELP_HINT,
     I18N_USERS_TITLE,
     I18N_MSG_USAGE,
     I18N_MSG_SENT_FORMAT,
diff --git a/src/i18n.c b/src/i18n.c
index 961e625..19ee198 100644
--- a/src/i18n.c
+++ b/src/i18n.c
@@ -95,6 +95,12 @@ const char *i18n_text(help_lang_t lang, i18n_text_id_t id) {
                 return " 公告 ";
             case I18N_MOTD_CONTINUE_HINT:
                 return " 按任意键继续 ";
+            case I18N_TITLE_ONLINE_FORMAT:
+                return "在线 %d";
+            case I18N_TITLE_MUTED:
+                return "静音";
+            case I18N_TITLE_HELP_HINT:
+                return "? 帮助";
             case I18N_USERS_TITLE:
                 return "在线用户";
             case I18N_MSG_USAGE:
@@ -162,6 +168,12 @@ const char *i18n_text(help_lang_t lang, i18n_text_id_t id) {
             return " NOTICE ";
         case I18N_MOTD_CONTINUE_HINT:
             return " Press any key ";
+        case I18N_TITLE_ONLINE_FORMAT:
+            return "online %d";
+        case I18N_TITLE_MUTED:
+            return "muted";
+        case I18N_TITLE_HELP_HINT:
+            return "? help";
         case I18N_USERS_TITLE:
             return "Online users";
         case I18N_MSG_USAGE:
diff --git a/src/tui.c b/src/tui.c
index 6d0e3a9..b099607 100644
--- a/src/tui.c
+++ b/src/tui.c
@@ -356,7 +356,9 @@ void tui_render_screen(client_t *client) {
     chip_count++;
 
     char online_buf[32];
-    snprintf(online_buf, sizeof(online_buf), "在线 %d", online);
+    snprintf(online_buf, sizeof(online_buf),
+             i18n_text(client->help_lang, I18N_TITLE_ONLINE_FORMAT),
+             online);
     chips[chip_count].value = online_buf;
     chips[chip_count].value_color = "\033[37m";
     chip_count++;
@@ -373,9 +375,10 @@ void tui_render_screen(client_t *client) {
     chips[chip_count].value_color = mode_color;
     chip_count++;
 
-    const char *hint = "? 帮助";
+    const char *hint = i18n_text(client->help_lang, I18N_TITLE_HELP_HINT);
     int hint_width = utf8_string_width(hint);
-    int mute_width = client->mute_joins ? 6 : 0;  /* "  静音" = 2 + 4 */
+    const char *mute_label = i18n_text(client->help_lang, I18N_TITLE_MUTED);
+    int mute_width = client->mute_joins ? utf8_string_width(mute_label) + 2 : 0;
 
     /* Unread @-mentions chip — high-priority, gets a bright yellow star.
      * Sits between mode and hint when present, and survives degradation
@@ -442,7 +445,8 @@ void tui_render_screen(client_t *client) {
         left_width += utf8_string_width(chips[i].value);
     }
     if (show_mute) {
-        buffer_appendf(left, sizeof(left), &lpos, "  \033[2;37m静音\033[0m");
+        buffer_appendf(left, sizeof(left), &lpos,
+                       "  \033[2;37m%s\033[0m", mute_label);
         left_width += mute_width;
     }
     if (show_unread) {
diff --git a/tests/test_interactive_input.sh b/tests/test_interactive_input.sh
index f965321..f2474a1 100755
--- a/tests/test_interactive_input.sh
+++ b/tests/test_interactive_input.sh
@@ -229,6 +229,7 @@ expect "Language set to: en"
 expect "Press any key"
 send -- "q"
 expect "NORMAL"
+expect "online"
 send -- ":"
 expect ":"
 send -- "users\r"
diff --git a/tests/unit/test_i18n.c b/tests/unit/test_i18n.c
index 9fcab6e..8667734 100644
--- a/tests/unit/test_i18n.c
+++ b/tests/unit/test_i18n.c
@@ -74,6 +74,10 @@ TEST(text_lookup_matches_language) {
                   "Press any key") != NULL);
     assert(strstr(i18n_text(LANG_ZH, I18N_MOTD_CONTINUE_HINT),
                   "按任意键") != NULL);
+    assert(strstr(i18n_text(LANG_EN, I18N_TITLE_ONLINE_FORMAT),
+                  "online") != NULL);
+    assert(strstr(i18n_text(LANG_ZH, I18N_TITLE_ONLINE_FORMAT),
+                  "在线") != NULL);
     assert(strstr(i18n_text(LANG_EN, I18N_MSG_USAGE),
                   "msg <username>") != NULL);
     assert(strstr(i18n_text(LANG_ZH, I18N_MSG_USAGE),