diff --git a/CMakeLists.txt b/CMakeLists.txt
index 553dc14..6180cc4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,8 @@ set(LICENSE "GPLv2+")
 set(PRJ_GROUP "System Environment/Libraries")
 set(RRJ_URL "https://github.com/chewing/${PROJECT_NAME}")
 
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
 enable_testing()
 include(GNUInstallDirs)
 
@@ -75,6 +77,8 @@ add_compile_definitions(
     PRJ_DATA_DIR=${PRJ_DATA_DIR}
     PRJ_VER=${PRJ_VER}
     PRJ_URL=${PRJ_URL}
+    IBUS_VERSION=${IBUS_VERSION}
+    CHEWING_VERSION=${CHEWING_VERSION}
     LIBEXEC_DIR=${LIBEXEC_DIR}
     CHEWING_DATADIR_REAL=${CHEWING_DATADIR_REAL}
 )
diff --git a/src/setup/ibus-setup-chewing-about.c b/src/setup/ibus-setup-chewing-about.c
index 79b88e4..f0d6fd6 100644
--- a/src/setup/ibus-setup-chewing-about.c
+++ b/src/setup/ibus-setup-chewing-about.c
@@ -26,7 +26,103 @@
 #define QUOTE_ME_INNER(s) #s
 #define QUOTE_ME(s) QUOTE_ME_INNER(s)
 
+static char *generate_debug_info(void) {
+    GString *string = g_string_new(NULL);
+
+    g_string_append_printf(string, "ibus-chewing: %s\n\n", QUOTE_ME(PRJ_VER));
+    g_string_append(string, "Compiled against:\n");
+    g_string_append_printf(string, "- ibus: %s\n", QUOTE_ME(IBUS_VERSION));
+    g_string_append_printf(string, "- libchewing: %s\n",
+                           QUOTE_ME(CHEWING_VERSION));
+
+    g_string_append(string, "\nRunning against:\n");
+    g_string_append_printf(string, "- libchewing: n/a\n");
+
+    g_string_append(string, "\n");
+    {
+        g_autoptr(GSettings) settings =
+            g_settings_new("org.freedesktop.IBus.Chewing");
+        gchar *kb_type = g_settings_get_string(settings, "kb-type");
+        gchar *sel_keys = g_settings_get_string(settings, "sel-keys");
+        gchar *chi_eng_mode_toggle =
+            g_settings_get_string(settings, "chi-eng-mode-toggle");
+        gchar *sync_caps_lock =
+            g_settings_get_string(settings, "sync-caps-lock");
+        gchar *default_english_case =
+            g_settings_get_string(settings, "default-english-case");
+
+        g_string_append(string, "Settings:\n");
+        g_string_append_printf(string, "- kb-type: %s\n", kb_type);
+        g_string_append_printf(string, "- sel-keys: %s\n", sel_keys);
+        g_string_append_printf(
+            string, "- plain-zhuyin: %d\n",
+            g_settings_get_boolean(settings, "plain-zhuyin"));
+        g_string_append_printf(
+            string, "- auto-shift-cur: %d\n",
+            g_settings_get_boolean(settings, "auto-shift-cur"));
+        g_string_append_printf(
+            string, "- add-phrase-direction: %d\n",
+            g_settings_get_boolean(settings, "add-phrase-direction"));
+        g_string_append_printf(
+            string, "- clean-buffer-focus-out: %d\n",
+            g_settings_get_boolean(settings, "clean-buffer-focus-out"));
+        g_string_append_printf(
+            string, "- easy-symbol-input: %d\n",
+            g_settings_get_boolean(settings, "easy-symbol-input"));
+        g_string_append_printf(
+            string, "- esc-clean-all-buf: %d\n",
+            g_settings_get_boolean(settings, "esc-clean-all-buf"));
+        g_string_append_printf(
+            string, "- max-chi-symbol-len: %d\n",
+            g_settings_get_int(settings, "max-chi-symbol-len"));
+        g_string_append_printf(string, "- chi-eng-mode-toggle: %s\n",
+                               chi_eng_mode_toggle);
+        g_string_append_printf(string, "- sync-caps-lock: %s\n",
+                               sync_caps_lock);
+        g_string_append_printf(string, "- default-english-case: %s\n",
+                               default_english_case);
+        g_string_append_printf(string, "- cand-per-page: %d\n",
+                               g_settings_get_uint(settings, "cand-per-page"));
+        g_string_append_printf(
+            string, "- show-page-number: %d\n",
+            g_settings_get_boolean(settings, "show-page-number"));
+        g_string_append_printf(
+            string, "- phrase-choice-from-last: %d\n",
+            g_settings_get_boolean(settings, "phrase-choice-from-last"));
+        g_string_append_printf(
+            string, "- space-as-selection: %d\n",
+            g_settings_get_boolean(settings, "space-as-selection"));
+        g_string_append_printf(
+            string, "- vertical-lookup-table: %d\n",
+            g_settings_get_boolean(settings, "vertical-lookup-table"));
+
+        g_free(kb_type);
+        g_free(sel_keys);
+        g_free(chi_eng_mode_toggle);
+        g_free(sync_caps_lock);
+        g_free(default_english_case);
+    }
+
+    g_string_append(string, "\n");
+    {
+        const char *desktop = g_getenv("XDG_CURRENT_DESKTOP");
+        const char *session_desktop = g_getenv("XDG_SESSION_DESKTOP");
+        const char *session_type = g_getenv("XDG_SESSION_TYPE");
+        const char *lang = g_getenv("LANG");
+
+        g_string_append(string, "Environment:\n");
+        g_string_append_printf(string, "- Desktop: %s\n", desktop);
+        g_string_append_printf(string, "- Session: %s (%s)\n", session_desktop,
+                               session_type);
+        g_string_append_printf(string, "- Language: %s\n", lang);
+    }
+
+    return g_string_free_and_steal(string);
+}
+
 void show_about(GtkWidget *self) {
+    char *debug_info = generate_debug_info();
+
     // clang-format off
     const char *developers[] = {
         "Peng Huang",
@@ -46,7 +142,7 @@ void show_about(GtkWidget *self) {
         "website", "https://chewing.im",
         "issue-url", "https://github.com/chewing/ibus-chewing",
         "support-url", "https://github.com/chewing/ibus-chewing/discussions",
-        //"debug-info", TODO return settings,
+        "debug-info", debug_info,
         "copyright", "© 2024 libchewing Core Team",
         "license-type", GTK_LICENSE_GPL_2_0,
         "developers", developers,
@@ -54,4 +150,6 @@ void show_about(GtkWidget *self) {
         NULL
     );
     // clang-format on
+
+    g_free(debug_info);
 }
\ No newline at end of file
diff --git a/src/setup/ibus-setup-chewing-about.h b/src/setup/ibus-setup-chewing-about.h
index 371548a..44832f1 100644
--- a/src/setup/ibus-setup-chewing-about.h
+++ b/src/setup/ibus-setup-chewing-about.h
@@ -22,4 +22,8 @@
 
 #include <adwaita.h>
 
-void show_about(GtkWidget *self);
\ No newline at end of file
+G_BEGIN_DECLS
+
+void show_about(GtkWidget *self);
+
+G_END_DECLS
\ No newline at end of file