diff --git a/src/main/java/com/fanruan/api/base/AbstractPainter.java b/src/main/java/com/fanruan/api/base/AbstractPainter.java
deleted file mode 100644
index e236deb..0000000
--- a/src/main/java/com/fanruan/api/base/AbstractPainter.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package com.fanruan.api.base;
-
-public abstract class AbstractPainter extends com.fr.base.AbstractPainter {
-}
diff --git a/src/main/java/com/fanruan/api/design/work/formula/TinyFormulaPane.java b/src/main/java/com/fanruan/api/design/work/formula/TinyFormulaPane.java
deleted file mode 100644
index 23b7af5..0000000
--- a/src/main/java/com/fanruan/api/design/work/formula/TinyFormulaPane.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.fanruan.api.design.work.formula;
-
-public class TinyFormulaPane extends com.fr.design.formula.TinyFormulaPane {
-    public TinyFormulaPane() {
-        super();
-    }
-}
diff --git a/src/main/java/com/fanruan/api/util/BaseHTMLWriterKit.java b/src/main/java/com/fanruan/api/report/BaseHTMLWriterKit.java
similarity index 95%
rename from src/main/java/com/fanruan/api/util/BaseHTMLWriterKit.java
rename to src/main/java/com/fanruan/api/report/BaseHTMLWriterKit.java
index ada9dde..fd9a07f 100644
--- a/src/main/java/com/fanruan/api/util/BaseHTMLWriterKit.java
+++ b/src/main/java/com/fanruan/api/report/BaseHTMLWriterKit.java
@@ -1,4 +1,4 @@
-package com.fanruan.api.util;
+package com.fanruan.api.report;
 
 import com.fr.stable.html.Tag;
 import com.fr.stable.web.Repository;