diff --git a/honoka/plugins/asciiinput.cpp b/honoka/plugins/asciiinput.cpp
index 7928ab0..31b4a5c 100644
--- a/honoka/plugins/asciiinput.cpp
+++ b/honoka/plugins/asciiinput.cpp
@@ -41,6 +41,8 @@
 AsciiInput::AsciiInput(ConfigPointer cfg) : PreEditor(cfg)
 {
     scim_string_to_key_list(lowProprotyKey,cfg->read(HONOKA_CONFIG_ASCIIINPUT_LOW_PRIORITY_KEY,String(HONOKA_DEFAULT_ASCIIINPUT_LOW_PRIORITY_KEY)));
+    scim_string_to_key_list(autoCommitKey,cfg->read(HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT_KEY,String(HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT_KEY)));
+    autoCommit = cfg->read(HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT,HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT);
 }
 
 
@@ -113,6 +115,17 @@
         (key.code == SCIM_KEY_Hyper_L) ||
         (key.code == SCIM_KEY_Hyper_R)) return true;
 
+    if (autoCommit) {
+        if (autoCommitKey.comp(key)) {
+            String c;
+            if (isprint(key.get_ascii_code())) c += key.get_ascii_code();
+            setCommitString(text.substr(0,pos) + utf8_mbstowcs(c));
+            reset();
+            pos = 0;
+            return true;
+        }
+    }
+
     if (isprint(key.get_ascii_code()) && (!key.is_alt_down()) && (!key.is_control_down())) {
         String c;
         c += key.get_ascii_code();
diff --git a/honoka/plugins/asciiinput.h b/honoka/plugins/asciiinput.h
index d649324..22576da 100644
--- a/honoka/plugins/asciiinput.h
+++ b/honoka/plugins/asciiinput.h
@@ -48,7 +48,8 @@
     virtual bool keyEventHook(const KeyEvent &key);
 
 protected:
-    HonokaKeyEventList lowProprotyKey;
+    HonokaKeyEventList lowProprotyKey,autoCommitKey;
+    bool autoCommit;
 protected:
     bool keyEvent(const KeyEvent &key);
 };
diff --git a/honoka/plugins/asciiplugin.cpp b/honoka/plugins/asciiplugin.cpp
index b607587..9f07368 100644
--- a/honoka/plugins/asciiplugin.cpp
+++ b/honoka/plugins/asciiplugin.cpp
@@ -55,6 +55,18 @@
         _("set the key that lowers priority."),
         String(HONOKA_DEFAULT_ASCIIINPUT_LOW_PRIORITY_KEY)
     ));
+    page->append(new HonokaSetupBoolItem(
+        _("Use automatic committing: "),
+        String(HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT),
+        _("if you want to commit the string when you press the specific key,check it."),
+        HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT
+    ));
+    page->append(new HonokaSetupKeyItem(
+        _("Automatic committing key: "),
+        String(HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT_KEY),
+        _("set the key that commit the string automatic."),
+        String(HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT_KEY)
+    ));
 
     HonokaSetupPage *sc = new HonokaSetupPage(_("shortcut keys: "),"","");
     sc->append(new HonokaSetupKeyItem(
diff --git a/honoka/plugins/asciiplugin.h b/honoka/plugins/asciiplugin.h
index e5e3418..cb1857d 100644
--- a/honoka/plugins/asciiplugin.h
+++ b/honoka/plugins/asciiplugin.h
@@ -37,6 +37,10 @@
 #define HONOKA_DEFAULT_WORDSPREDICTION_FILE         "/usr/share/dict/words"
 #define HONOKA_CONFIG_ASCIIINPUT_LOW_PRIORITY_KEY   "/IMEngine/Honoka/AsciiInput/LowPriorityKey"
 #define HONOKA_DEFAULT_ASCIIINPUT_LOW_PRIORITY_KEY  ""
+#define HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT_KEY    "/IMEngine/Honoka/AsciiInput/AutoCommitKey"
+#define HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT_KEY   "space,comma,period"
+#define HONOKA_CONFIG_ASCIIINPUT_AUTO_COMMIT        "/IMEngine/Honoka/AsciiInput/AutoCommit"
+#define HONOKA_DEFAULT_ASCIIINPUT_AUTO_COMMIT       false
 
 using namespace std;
 using namespace scim;