diff --git a/model/新增功能uml图.vsdx b/model/新增功能uml图.vsdx
index e957016..7ca5abf 100644
Binary files a/model/新增功能uml图.vsdx and b/model/新增功能uml图.vsdx differ
diff --git a/other/LockPicture.png b/other/LockPicture.png
new file mode 100644
index 0000000..d8347c3
Binary files /dev/null and b/other/LockPicture.png differ
diff --git a/other/unLockPicture.png b/other/unLockPicture.png
new file mode 100644
index 0000000..91c21b1
Binary files /dev/null and b/other/unLockPicture.png differ
diff --git a/src/data/Notes.java b/src/data/Notes.java
index b4f2014..601feeb 100644
--- a/src/data/Notes.java
+++ b/src/data/Notes.java
@@ -210,21 +210,13 @@ public class Notes { // 定义类，给模块的其他类提供变量定义
                  */
                 public static final String LOCKED = "locked"; // 锁定状态 ****
 
-                /*
-                 * The password
-                 * <P>
-                 * Type : TEXT
-                 * </P>
-                 */
-                public static final String PASSWORD = "password"; // 密码 *****
-
                 /*
                  * The picture
                  * <P>
                  * Type : BLOB
                  * </P>
                  */
-                public static final String PICTURE = "picture"; // 图片****
+                public static final String PICTURE = "picture"; // 图片路径****
 
         }
 
diff --git a/src/data/NotesDatabaseHelper.java b/src/data/NotesDatabaseHelper.java
index 9face1f..a1969bf 100644
--- a/src/data/NotesDatabaseHelper.java
+++ b/src/data/NotesDatabaseHelper.java
@@ -63,7 +63,6 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper { // 该类为便签SQ
                     NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
 
                     NoteColumns.LOCKED + " INTEGER NOT NULL DEFAULT 0" +
-                    NoteColumns.PASSWORD + " TEXT NOT NULL DEFAULT ''," +
                     NoteColumns.PICTURE + " TEXT NOT NULL DEFAULT ''," +
 
                     ")";