diff --git a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/Markup.java b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/Markup.java
index 09cd4d8ac..63e3a3a04 100644
--- a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/Markup.java
+++ b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/Markup.java
@@ -52,6 +52,8 @@
 
 package com.fr.third.v2.lowagie.text.html;
 
+import com.fr.third.v2.lowagie.text.ElementTags;
+import com.fr.third.v2.lowagie.text.html.simpleparser.ChainedProperties;
 import java.awt.Color;
 import java.util.ArrayList;
 import java.util.List;
@@ -417,6 +419,21 @@ public class Markup {
 		return f;
 	}
 
+    /**
+     * 解析当前字号（可能是继承来的）
+     *
+     * @param cprops
+     * @return
+     */
+	public static float parseDefaultFontSize(ChainedProperties cprops) {
+		if (null == cprops) {
+			return DEFAULT_FONT_SIZE;
+		}
+		String size = cprops.getProperty(ElementTags.SIZE);
+		return null == size ? Markup.DEFAULT_FONT_SIZE : Markup.parseLength(size,
+				Markup.DEFAULT_FONT_SIZE);
+	}
+
 	/**
 	 * Converts a <CODE>Color</CODE> into a HTML representation of this <CODE>
 	 * Color</CODE>.
diff --git a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/FactoryProperties.java b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/FactoryProperties.java
index 5e68ef341..752d6bb2d 100644
--- a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/FactoryProperties.java
+++ b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/FactoryProperties.java
@@ -211,14 +211,14 @@ public class FactoryProperties {
 			List<String> list = Markup.parseNESW(props.getPropertyFromChain("div", Markup.CSS_KEY_MARGIN));
 			if (null != list && 4 == list.size()) {
 				for (int i = 0; i < HtmlConstants.MARGIN.size() && i < list.size(); i++) {
-					p.setAttribute(HtmlConstants.MARGIN.get(i), list.get(i));
+					p.setAttribute(HtmlConstants.MARGIN.get(i), String.valueOf(Markup.parseLength(list.get(i), Markup.parseDefaultFontSize(props))));
 				}
 			}
 		}
 		for (String margin : HtmlConstants.MARGIN) {
 			if (props.hasPropertyInChain("div", margin)) {
 				String ss = props.getPropertyFromChain("div", margin);
-				p.setAttribute(margin, ss);
+				p.setAttribute(margin, String.valueOf(Markup.parseLength(ss, Markup.parseDefaultFontSize(props))));
 			}
 		}
 	}
diff --git a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/HTMLWorker.java b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/HTMLWorker.java
index 2c5e436f2..5135f67bd 100644
--- a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/HTMLWorker.java
+++ b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/HTMLWorker.java
@@ -50,6 +50,7 @@
 
 package com.fr.third.v2.lowagie.text.html.simpleparser;
 
+import com.fr.third.v2.lowagie.text.html.utils.DefaultPropertiesHandleUtils;
 import com.fr.third.v2.lowagie.text.pdf.PdfFont;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayInputStream;
@@ -211,17 +212,7 @@ public class HTMLWorker implements SimpleXMLDocHandler, DocListener {
 			return;
 		try {
 			style.applyStyle(tag, h);
-			if(tag.equals("p")){
-				h.put(Markup.CSS_KEY_MARGINTOP, "16px");
-				h.put(Markup.CSS_KEY_MARGINBOTTOM, "16px");
-			}
-			if (tag.equals("th")) {
-				h.put("b", null);
-			}
-			if (tag.equals(HtmlTags.ANCHOR)) {
-				h.put("u", null);
-				h.put("color", "blue");
-			}
+			DefaultPropertiesHandleUtils.fillDefaultProperties(tag, h);
 			String follow = (String) FactoryProperties.followTags.get(tag);
 			if (follow != null) {
 				HashMap prop = new HashMap();
diff --git a/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/utils/DefaultPropertiesHandleUtils.java b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/utils/DefaultPropertiesHandleUtils.java
new file mode 100644
index 000000000..58a9043f6
--- /dev/null
+++ b/fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/utils/DefaultPropertiesHandleUtils.java
@@ -0,0 +1,90 @@
+package com.fr.third.v2.lowagie.text.html.utils;
+
+import com.fr.third.v2.lowagie.text.html.HtmlTags;
+import com.fr.third.v2.lowagie.text.html.Markup;
+import java.util.HashMap;
+import java.util.Properties;
+
+/**
+ * 处理标签默认属性值
+ *
+ * @author Hugh.C
+ * @version 1.0
+ * Created by Hugh.C on 2020/7/3
+ */
+public class DefaultPropertiesHandleUtils {
+
+    //h1-h6 标签默认字体大小
+    private static final HashMap<String, String> H_TAG_DEFAULT_FONT_SIZE = new HashMap<String, String>(6);
+
+    //h1-h6 标签默认margin-top and bottom大小
+    private static final HashMap<String, String> H_TAG_DEFAULT_MARGIN = new HashMap<String, String>(6);
+
+
+    static {
+        H_TAG_DEFAULT_FONT_SIZE.put("h1", "2em");
+        H_TAG_DEFAULT_FONT_SIZE.put("h2", "1.5em");
+        H_TAG_DEFAULT_FONT_SIZE.put("h3", "1.17em");
+        H_TAG_DEFAULT_FONT_SIZE.put("h4", "1em");
+        H_TAG_DEFAULT_FONT_SIZE.put("h5", "0.83em");
+        H_TAG_DEFAULT_FONT_SIZE.put("h6", "0.67em");
+
+        H_TAG_DEFAULT_MARGIN.put("h1", "0.67em");
+        H_TAG_DEFAULT_MARGIN.put("h2", "0.83em");
+        H_TAG_DEFAULT_MARGIN.put("h3", "1em");
+        H_TAG_DEFAULT_MARGIN.put("h4", "1.33em");
+        H_TAG_DEFAULT_MARGIN.put("h5", "1.67em");
+        H_TAG_DEFAULT_MARGIN.put("h6", "2.33em");
+    }
+
+    /**
+     * 填充默认属性值
+     *
+     * @param tag
+     * @param h
+     */
+    public static void fillDefaultProperties(String tag, HashMap h) {
+        if (null == tag || null == h) {
+            return;
+        }
+        if (HtmlTags.HEADERCELL.endsWith(tag)) {
+            h.put("b", null);
+            return;
+        }
+        if (HtmlTags.ANCHOR.equals(tag)) {
+            h.put("u", null);
+            h.put("color", "blue");
+            return;
+        }
+
+        String style = (String) h.get("style");
+        if (HtmlTags.PARAGRAPH.equals(tag)) {
+            Properties props = Markup.parseAttributes(style);
+            if (!props.containsKey(Markup.CSS_KEY_MARGINTOP)) {
+                h.put(Markup.CSS_KEY_MARGINTOP, "1em");
+            }
+            if (!props.containsKey(Markup.CSS_KEY_MARGINBOTTOM)) {
+                h.put(Markup.CSS_KEY_MARGINBOTTOM, "1em");
+            }
+            return;
+        }
+
+        if (H_TAG_DEFAULT_FONT_SIZE.containsKey(tag)) {
+            h.put("b", null);
+            Properties props = Markup.parseAttributes(style);
+            if (!props.containsKey(Markup.CSS_KEY_MARGINTOP)) {
+                h.put(Markup.CSS_KEY_MARGINTOP, H_TAG_DEFAULT_MARGIN.get(tag));
+            }
+            if (!props.containsKey(Markup.CSS_KEY_MARGINBOTTOM)) {
+                h.put(Markup.CSS_KEY_MARGINBOTTOM, H_TAG_DEFAULT_MARGIN.get(tag));
+            }
+            if (!props.containsKey(Markup.CSS_KEY_FONTSIZE)) {
+                h.put("style", new StringBuilder(null == style ? "" : style).append(";")
+                        .append(Markup.CSS_KEY_FONTSIZE).append(":").append(H_TAG_DEFAULT_FONT_SIZE.get(tag)).append(";").toString());
+            }
+            return;
+        }
+
+    }
+
+}