diff --git a/dataloader/README.md b/dataloader/README.md
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+# dataloader 
+a tool to load data into database from excel file
+
+## Dependents
+* [Gadget](https://github.com/yumoqing/gadget)
+
+You should have a gadget run environment installed before, the dataloader
+uses gadget conf/config.json file to read the database configuation.
+
+## Usage
+change the current folder to gadget running folder(it contains a "conf" folder which config.json file in it), then
+```
+datalaoder excel_data_file
+```
+
+## Excel file format
+
+### Specifies the target database 
+use a datasheet to set the sheet name preffix and subffix with '__', examples:
+"__testdb__" stand for "testdb", "__mydatabase__" stand for "mydatabase",
+
+### Specifies the target table
+the table name will use to insert data can be specifies by set the sheet name as the table name
+
+### Specifies the field name
+dataloader can inserts data to a table not necesary provide all the fields data, the table's nullable fields can be ignore.
+
+first row in the sheet is use to specify the fields with data, each cell for one field, value of the cell should be fill in the table's field name.
+
+### Specifies the data
+Data start from second row in the sheet, each row for one records
+
+## Examples
+there is a kboss database in databases, and the kboss database have two tabel named by 'appcodes' and 'appcodes_kv'
+
+* Specify database
+![specify database](./database.png)
+
+* Specify table appcodes
+![specify appcodes table](./table1.png)
+
+* Specify table appcodes_kv
+![specify table appcodes_kv](./table1.png)
+
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diff --git a/dataloader/ubuntu/build.sh b/dataloader/ubuntu/build.sh
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+#!/bin/sh
+
+pyinstaller -y --clean dataloader.spec
+echo "build success, please find the target in dist folder"
diff --git a/dataloader/ubuntu/dataloader.spec b/dataloader/ubuntu/dataloader.spec
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+# -*- mode: python ; coding: utf-8 -*-
+
+
+block_cipher = None
+
+
+a = Analysis(
+    ['../dataloader.py'],
+    pathex=[],
+    binaries=[],
+    datas=[],
+    hiddenimports=[
+		"aiopg",
+		"aiomysql"
+	],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='dataloader',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=True,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
diff --git a/dataloader/windows/build.bat b/dataloader/windows/build.bat
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+++ b/dataloader/windows/build.bat
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+pyinstaller -y --clean dataloader.spec
+echo "build success, please find the target in dist folder"
diff --git a/dataloader/windows/dataloader.spec b/dataloader/windows/dataloader.spec
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+++ b/dataloader/windows/dataloader.spec
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+# -*- mode: python ; coding: utf-8 -*-
+
+
+block_cipher = None
+
+
+a = Analysis(
+    ['../dataloader.py'],
+    pathex=[],
+    binaries=[],
+    datas=[],
+    hiddenimports=[
+		"aiopg",
+		"aiomysql"
+	],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='dataloader',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=True,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)