diff --git a/app/Entities/MyStorage/FileEntity.php b/app/Entities/MyStorage/FileEntity.php
index dd3af3a..0b0a2b1 100644
--- a/app/Entities/MyStorage/FileEntity.php
+++ b/app/Entities/MyStorage/FileEntity.php
@@ -40,6 +40,14 @@ class FileEntity extends CommonEntity
     {
         $this->attributes['file_type'] = $mimetype;
     }
+    final public function getSize(): int
+    {
+        return $this->attributes['file_size'];
+    }
+    public function setSize(int $file_size): void
+    {
+        $this->attributes['file_size'] = $file_size;
+    }
     final public function getMediaHTML(): string
     {
         return $this->attributes['media_html'];
diff --git a/app/Libraries/MyStorage/FileLibrary.php b/app/Libraries/MyStorage/FileLibrary.php
index a17fdcb..7dee383 100644
--- a/app/Libraries/MyStorage/FileLibrary.php
+++ b/app/Libraries/MyStorage/FileLibrary.php
@@ -65,6 +65,7 @@ class FileLibrary extends MyStorageLibrary
         $entity->setPath($this->getPath());
         $entity->setTitle($fileName);
         $entity->setMimeType(mime_content_type($saveFilePath));
+        $entity->setSize(filesize($saveFilePath));
         $entity->setMediaHTML($this->getMediaTag($mediaType, $entity));
         return $entity;
     }
diff --git a/app/Models/Mangboard/FileModel.php b/app/Models/Mangboard/FileModel.php
index 269303b..2134d60 100644
--- a/app/Models/Mangboard/FileModel.php
+++ b/app/Models/Mangboard/FileModel.php
@@ -47,6 +47,7 @@ class FileModel extends CommonModel
             "file_name",
             "file_path",
             "file_type",
+            "file_size",
             "file_description",
             "file_sequence",
             "reg_date"
@@ -63,6 +64,7 @@ class FileModel extends CommonModel
             case "board_pid":
             case "user_pid":
             case "file_sequence":
+            case "file_size":
                 $rules[$field] =  "if_exist|numeric";
                 break;
             case "board_name":