diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22f22dd9..6f9bf239 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ This release added form fields (textinput, checkbox, and dropdown), drawing shap
 - FormField: Ability to add textinput, checkbox, and dropdown form elements - @ivanlanin GH-266
 - Setting: Ability to define document protection (readOnly, comments, trackedChanges, forms) - @ivanlanin
 - Setting: Ability to remove [Compatibility Mode] text in the MS Word title bar - @ivanlanin
+- SDT: Ability to add structured document tag elements (comboBox, dropDownList, date) - @ivanlanin
 
 ### Bugfixes
 
diff --git a/samples/Sample_34_SDT.php b/samples/Sample_34_SDT.php
new file mode 100644
index 00000000..241dee2a
--- /dev/null
+++ b/samples/Sample_34_SDT.php
@@ -0,0 +1,26 @@
+<?php
+include_once 'Sample_Header.php';
+
+// New Word document
+echo date('H:i:s'), " Create new PhpWord object", EOL;
+$phpWord = new \PhpOffice\PhpWord\PhpWord();
+
+$section = $phpWord->addSection();
+
+$textrun = $section->addTextRun();
+$textrun->addText('Combobox: ');
+$textrun->addSDT('comboBox')->setListItems(array('1' => 'Choice 1', '2' => 'Choice 2'));
+
+$textrun = $section->addTextRun();
+$textrun->addText('Date: ');
+$textrun->addSDT('date');
+
+$textrun = $section->addTextRun();
+$textrun->addText('Drop down list: ');
+$textrun->addSDT('dropDownList')->setListItems(array('1' => 'Choice 1', '2' => 'Choice 2'));
+
+// Save file
+echo write($phpWord, basename(__FILE__, '.php'), $writers);
+if (!CLI) {
+    include_once 'Sample_Footer.php';
+}
diff --git a/src/PhpWord/Element/AbstractContainer.php b/src/PhpWord/Element/AbstractContainer.php
index 3ec11390..b934b2d8 100644
--- a/src/PhpWord/Element/AbstractContainer.php
+++ b/src/PhpWord/Element/AbstractContainer.php
@@ -43,6 +43,7 @@ namespace PhpOffice\PhpWord\Element;
  * @method Shape addObject(string $type, mixed $style = null)
  * @method Chart addChart(string $type, array $categories, array $values, array $style = null)
  * @method FormField addFormField(string $type, mixed $fStyle = null, mixed $pStyle = null)
+ * @method SDT addSDT(string $type)
  *
  * @since 0.10.0
  */
@@ -79,7 +80,7 @@ abstract class AbstractContainer extends AbstractElement
         $elements = array('Text', 'TextRun', 'Link', 'PreserveText', 'TextBreak',
             'ListItem', 'ListItemRun', 'Table', 'Image', 'Object', 'Footnote',
             'Endnote', 'CheckBox', 'TextBox', 'Field', 'Line', 'Shape',
-            'Title', 'TOC', 'PageBreak', 'Chart', 'FormField');
+            'Title', 'TOC', 'PageBreak', 'Chart', 'FormField', 'SDT');
         $functions = array();
         for ($i = 0; $i < count($elements); $i++) {
             $functions[$i] = 'add' . $elements[$i];
@@ -192,6 +193,7 @@ abstract class AbstractContainer extends AbstractElement
             'Line'          => $allContainers,
             'Shape'         => $allContainers,
             'FormField'     => $allContainers,
+            'SDT'           => $allContainers,
             'TextRun'       => array('Section', 'Header', 'Footer', 'Cell', 'TextBox'),
             'ListItem'      => array('Section', 'Header', 'Footer', 'Cell', 'TextBox'),
             'ListItemRun'   => array('Section', 'Header', 'Footer', 'Cell', 'TextBox'),
diff --git a/src/PhpWord/Element/SDT.php b/src/PhpWord/Element/SDT.php
new file mode 100644
index 00000000..477c50f3
--- /dev/null
+++ b/src/PhpWord/Element/SDT.php
@@ -0,0 +1,130 @@
+<?php
+/**
+ * This file is part of PHPWord - A pure PHP library for reading and writing
+ * word processing documents.
+ *
+ * PHPWord is free software distributed under the terms of the GNU Lesser
+ * General Public License version 3 as published by the Free Software Foundation.
+ *
+ * For the full copyright and license information, please read the LICENSE
+ * file that was distributed with this source code. For the full list of
+ * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
+ *
+ * @link        https://github.com/PHPOffice/PHPWord
+ * @copyright   2010-2014 PHPWord contributors
+ * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
+ */
+
+namespace PhpOffice\PhpWord\Element;
+
+/**
+ * Structured document tag (SDT) element
+ *
+ * @since 0.12.0
+ */
+class SDT extends Text
+{
+    /**
+     * Form field type: comboBox|dropDownList|date
+     *
+     * @var string
+     */
+    private $type;
+
+    /**
+     * Value
+     *
+     * @var string|bool|int
+     */
+    private $value;
+
+    /**
+     * CheckBox/DropDown list entries
+     *
+     * @var array
+     */
+    private $listItems = array();
+
+    /**
+     * Create new instance
+     *
+     * @param string $type
+     * @param mixed $fontStyle
+     * @param mixed $paragraphStyle
+     * @return self
+     */
+    public function __construct($type, $fontStyle = null, $paragraphStyle = null)
+    {
+        $this->setType($type);
+    }
+
+    /**
+     * Get type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set type
+     *
+     * @param string $value
+     * @return self
+     */
+    public function setType($value)
+    {
+        $enum = array('comboBox', 'dropDownList', 'date');
+        $this->type = $this->setEnumVal($value, $enum, $this->type);
+
+        return $this;
+    }
+
+    /**
+     * Get value
+     *
+     * @return string|bool|int
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Set value
+     *
+     * @param string|bool|int $value
+     * @return self
+     */
+    public function setValue($value)
+    {
+        $this->value = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get listItems
+     *
+     * @return array
+     */
+    public function getListItems()
+    {
+        return $this->listItems;
+    }
+
+    /**
+     * Set listItems
+     *
+     * @param array $value
+     * @return self
+     */
+    public function setListItems($value)
+    {
+        $this->listItems = $value;
+
+        return $this;
+    }
+}
diff --git a/src/PhpWord/Writer/Word2007/Element/SDT.php b/src/PhpWord/Writer/Word2007/Element/SDT.php
new file mode 100644
index 00000000..94578e16
--- /dev/null
+++ b/src/PhpWord/Writer/Word2007/Element/SDT.php
@@ -0,0 +1,110 @@
+<?php
+/**
+ * This file is part of PHPWord - A pure PHP library for reading and writing
+ * word processing documents.
+ *
+ * PHPWord is free software distributed under the terms of the GNU Lesser
+ * General Public License version 3 as published by the Free Software Foundation.
+ *
+ * For the full copyright and license information, please read the LICENSE
+ * file that was distributed with this source code. For the full list of
+ * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
+ *
+ * @link        https://github.com/PHPOffice/PHPWord
+ * @copyright   2010-2014 PHPWord contributors
+ * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
+ */
+
+namespace PhpOffice\PhpWord\Writer\Word2007\Element;
+
+use PhpOffice\PhpWord\Element\SDT as SDTElement;
+use PhpOffice\PhpWord\Shared\XMLWriter;
+
+/**
+ * Structured document tag element writer
+ *
+ * @since 0.12.0
+ * @link http://www.datypic.com/sc/ooxml/t-w_CT_SdtBlock.html
+ */
+class SDT extends Text
+{
+    /**
+     * Write element
+     */
+    public function write()
+    {
+        $xmlWriter = $this->getXmlWriter();
+        $element = $this->getElement();
+        if (!$element instanceof SDTElement) {
+            return;
+        }
+        $type = $element->getType();
+        $writeFormField = "write{$type}";
+
+        $this->startElementP();
+
+        $xmlWriter->startElement('w:sdt');
+
+        // Properties
+        $xmlWriter->startElement('w:sdtPr');
+        $xmlWriter->writeElementBlock('w:id', 'w:val', rand(100000000, 999999999));
+        $xmlWriter->writeElementBlock('w:lock', 'w:val', 'sdtLocked');
+        $this->$writeFormField($xmlWriter, $element);
+        $xmlWriter->endElement(); // w:sdtPr
+
+        // Content
+        $xmlWriter->startElement('w:sdtContent');
+        $xmlWriter->startElement('w:r');
+        $xmlWriter->startElement('w:t');
+        $xmlWriter->writeRaw('Pick value');
+        $xmlWriter->endElement(); // w:t
+        $xmlWriter->endElement(); // w:r
+        $xmlWriter->endElement(); // w:sdtContent
+
+        $xmlWriter->endElement(); // w:sdt
+
+        $this->endElementP(); // w:p
+    }
+
+    /**
+     * Write combo box
+     *
+     * @link http://www.datypic.com/sc/ooxml/t-w_CT_SdtComboBox.html
+     */
+    private function writeComboBox(XMLWriter $xmlWriter, SDTElement $element)
+    {
+        $type = $element->getType();
+        $listItems = $element->getListItems();
+
+        $xmlWriter->startElement("w:{$type}");
+        foreach ($listItems as $key => $val) {
+            $xmlWriter->writeElementBlock('w:listItem', array('w:value' => $key, 'w:displayText' => $val));
+        }
+        $xmlWriter->endElement(); // w:{$type}
+    }
+
+    /**
+     * Write drop down list
+     *
+     * @link http://www.datypic.com/sc/ooxml/t-w_CT_SdtDropDownList.html
+     */
+    private function writeDropDownList(XMLWriter $xmlWriter, SDTElement $element)
+    {
+        $this->writecomboBox($xmlWriter, $element);
+    }
+
+    /**
+     * Write date
+     *
+     * @link http://www.datypic.com/sc/ooxml/t-w_CT_SdtDate.html
+     */
+    private function writeDate(XMLWriter $xmlWriter, SDTElement $element)
+    {
+        $xmlWriter->startElement("w:date");
+        $xmlWriter->writeElementBlock('w:dateFormat', 'w:val', 'd/M/yyyy');
+        $xmlWriter->writeElementBlock('w:lid', 'w:val', 'en-US');
+        $xmlWriter->writeElementBlock('w:storeMappedDataAs', 'w:val', 'dateTime');
+        $xmlWriter->writeElementBlock('w:calendar', 'w:val', 'gregorian');
+        $xmlWriter->endElement(); // w:date
+    }
+}
diff --git a/tests/PhpWord/Tests/Writer/Word2007/ElementTest.php b/tests/PhpWord/Tests/Writer/Word2007/ElementTest.php
index 6c10f3a5..92a74c15 100644
--- a/tests/PhpWord/Tests/Writer/Word2007/ElementTest.php
+++ b/tests/PhpWord/Tests/Writer/Word2007/ElementTest.php
@@ -41,7 +41,7 @@ class ElementTest extends \PHPUnit_Framework_TestCase
         $elements = array(
             'CheckBox', 'Container', 'Footnote', 'Image', 'Link', 'ListItem', 'ListItemRun',
             'Object', 'PreserveText', 'Table', 'Text', 'TextBox', 'TextBreak', 'Title', 'TOC',
-            'Field', 'Line', 'Shape', 'Chart'
+            'Field', 'Line', 'Shape', 'Chart', 'FormField', 'SDT'
         );
         foreach ($elements as $element) {
             $objectClass = 'PhpOffice\\PhpWord\\Writer\\Word2007\\Element\\' . $element;
@@ -196,4 +196,24 @@ class ElementTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue($doc->elementExists($path . '/w:checkBox'));
         $this->assertTrue($doc->elementExists($path . '/w:ddList'));
     }
+
+    /**
+     * Test SDT elements
+     */
+    public function testSDTElements()
+    {
+        $phpWord = new PhpWord();
+        $section = $phpWord->addSection();
+
+        $section->addSDT('comboBox');
+        $section->addSDT('dropDownList');
+        $section->addSDT('date');
+
+        $doc = TestHelperDOCX::getDocument($phpWord);
+
+        $path = "/w:document/w:body/w:p/w:sdt/w:sdtPr";
+        $this->assertTrue($doc->elementExists($path . '/w:comboBox'));
+        $this->assertTrue($doc->elementExists($path . '/w:dropDownList'));
+        $this->assertTrue($doc->elementExists($path . '/w:date'));
+    }
 }