diff --git a/htdocs/lib/Database/DBLog.php b/htdocs/lib/Database/DBLog.php
new file mode 100644
index 0000000..d23ef6c
--- /dev/null
+++ b/htdocs/lib/Database/DBLog.php
@@ -0,0 +1,130 @@
+<?php
+/**
+ * DBLog.php
+ *
+ */
+
+namespace UElearning\Database;
+
+use UElearning\Exception;
+
+require_once UELEARNING_LIB_ROOT.'/Database/Database.php';
+require_once UELEARNING_LIB_ROOT.'/Database/Exception.php';
+
+
+class DBLog extends Database {
+
+    public function insertLog($array){
+
+
+        if( !isset($array['said']) ){
+            $array['said'] = null;
+        }
+        if( !isset($array['tid']) ){
+            $array['tid'] = null;
+        }
+        if( !isset($array['qid']) ){
+            $array['qid'] = null;
+        }
+        if( !isset($array['answer']) ){
+            $array['answer'] = null;
+        }
+        if( !isset($array['other']) ){
+            $array['other'] = null;
+        }
+        // TODO: 不填enable, enable_noAppoint也要能操作
+
+        $LID          = $array['lid'];
+        $UId          = $array['uid'];
+        $Date         = $array['date'];
+        $SaID         = $array['said'];
+        $TID          = $array['tid'];
+        $ActionGruop  = $array['actionGruop'];
+        $Encode       = $array['encode'];
+        $QID          = $array['qid'];
+        $Answer       = $array['answer'];
+        $Other        = $array['other'];
+
+        //紀錄使用者帳號進資料庫
+        $sqlString = "INSERT INTO ".$this->table('Log').
+            " (`LID`, `UID`, `Date`, `SaID`, `TID`,
+            `ActionGroup`, `Encode`,
+            `QID`, `Aswer`, `Other`)
+            VALUES ( :lid , :uid, :date , :said , :tid ,
+            :actionGruop , :encode , :qid ,
+            :answer , :other )";
+
+        $query = $this->connDB->prepare($sqlString);
+        $query->bindParam(":lid", $LID);
+        $query->bindParam(":uid", $UId);
+        $query->bindParam(":date", $Date);
+        $query->bindParam(":said", $SaID);
+        $query->bindParam(":tid", $TID);
+        $query->bindParam(":actionGruop", $ActionGruop);
+        $query->bindParam(":encode", $Encode);
+        $query->bindParam(":qid", $QID);
+        $query->bindParam(":answer", $Answer);
+        $query->bindParam(":other", $Other);
+        $query->execute();
+
+    }
+
+    /**
+     * 內部使用的查詢動作
+     * @param string $where 查詢語法
+     * @return array 查詢結果陣列
+     */
+    protected function queryLogByWhere($where) {
+
+        $sqlString = "SELECT * FROM `".$this->table('Log')."` ".
+                     "WHERE ".$where;
+
+        $query = $this->connDB->prepare($sqlString);
+        $query->execute();
+
+        $queryResultAll = $query->fetchAll();
+        // 如果有查到一筆以上
+        if( count($queryResultAll) >= 1 ) {
+            // 製作回傳結果陣列
+            $result = array();
+            foreach($queryResultAll as $key => $thisResult) {
+
+                array_push($result,
+                    array( 'lid'            => $thisResult['LID'],
+                           'uid'            => $thisResult['UID'],
+                           'date'           => $thisResult['Date'],
+                           'said'           => $thisResult['SaID'],
+                           'tid'            => $thisResult['TID'],
+                           'actionGruop'    => $thisResult['ActionGroup'],
+                           'encode'         => $thisResult['Encode'],
+                           'qid'            => $thisResult['QID'],
+                           'answer'         => $thisResult['Aswer'],
+                           'other'          => $thisResult['Other']
+                    )
+                );
+            }
+            return $result;
+        }
+        else {
+            return null;
+        }
+    }
+
+    public function queryLog($lid) {
+
+        $queryResultAll = $this->queryLogByWhere("`LID`=".$this->connDB->quote($lid));
+
+        // 如果有查到一筆以上
+        if( count($queryResultAll) >= 1 ) {
+            return $queryResultAll[0];
+        }
+        // 若都沒查到的話
+        else {
+            return null;
+        }
+    }
+
+    public function queryAllLog() {
+        return $this->queryLogByWhere("1");
+    }
+}
diff --git a/sql/UElearning.sql b/sql/UElearning.sql
index 3d877e1..1fe1c3f 100644
--- a/sql/UElearning.sql
+++ b/sql/UElearning.sql
@@ -377,9 +377,15 @@ CREATE TABLE IF NOT EXISTS `chu__Log` (
   `LID` int(11) NOT NULL AUTO_INCREMENT,
   `UID` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
   `Date` datetime NOT NULL,
+  `SaID` int(10) DEFAULT NULL,
+  `TID` int(10) DEFAULT NULL,
+  `ActionGroup` varchar(50) COLLATE utf8_unicode_ci NOT NULL,
   `Encode` varchar(3) COLLATE utf8_unicode_ci NOT NULL,
+  `QID` int(10) DEFAULT NULL,
+  `Aswer` varchar(30) COLLATE utf8_unicode_ci DEFAULT NULL,
+  `Other` varchar(50) COLLATE utf8_unicode_ci DEFAULT NULL,
   PRIMARY KEY (`LID`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ;
+) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=4 ;
 
 -- --------------------------------------------------------