diff --git a/config/.env.example b/config/.env.example
new file mode 100644
index 0000000..077c3d5
--- /dev/null
+++ b/config/.env.example
@@ -0,0 +1,18 @@
+# SQL Server
+SQL_SERVER_SERVER=192.168.110.114
+SQL_SERVER_DATABASE=CompanyDB
+SQL_SERVER_USERNAME=peng
+SQL_SERVER_PASSWORD=your_password_here
+SQL_SERVER_DRIVER=ODBC Driver 18 for SQL Server
+SQL_SERVER_TRUST_CERT=yes
+
+# MySQL
+MYSQL_HOST=localhost
+MYSQL_PORT=3306
+MYSQL_DATABASE=erp_db
+MYSQL_USERNAME=root
+MYSQL_PASSWORD=your_password_here
+
+# ERP Credentials (optional, can also be entered in UI)
+ERP_USERNAME=BLDpengqiangqiang
+ERP_PASSWORD=your_password_here
diff --git a/config/app.json b/config/app.json
new file mode 100644
index 0000000..5ad2388
--- /dev/null
+++ b/config/app.json
@@ -0,0 +1,19 @@
+{
+  "appName": "ERPAuto",
+  "version": "1.0.0",
+  "logLevel": "info",
+  "browser": {
+    "headless": false,
+    "slowMo": 50,
+    "timeout": 30000
+  },
+  "erp": {
+    "baseUrl": "https://68.11.34.30:8082",
+    "ignoreHttpsErrors": true
+  },
+  "paths": {
+    "tempDir": "./data/temp",
+    "outputDir": "./data/output",
+    "reportDir": "./data/reports"
+  }
+}
diff --git a/config/development.json b/config/development.json
new file mode 100644
index 0000000..e42335c
--- /dev/null
+++ b/config/development.json
@@ -0,0 +1,7 @@
+{
+  "logLevel": "debug",
+  "browser": {
+    "headless": false,
+    "slowMo": 100
+  }
+}
diff --git a/src/main/config/app.config.ts b/src/main/config/app.config.ts
new file mode 100644
index 0000000..957bdd5
--- /dev/null
+++ b/src/main/config/app.config.ts
@@ -0,0 +1,103 @@
+import fs from 'fs';
+import path from 'path';
+import { AppConfig } from '../models/config.types';
+
+export class ConfigManager {
+  private static instance: AppConfig | null = null;
+
+  static load(): AppConfig {
+    if (this.instance) {
+      return this.instance;
+    }
+
+    // Load default config
+    const defaultConfig = this.getDefaultConfig();
+
+    // Load environment-specific config
+    const env = process.env.NODE_ENV || 'development';
+    const envConfigPath = path.join(__dirname, `../../../config/${env}.json`);
+
+    let envConfig: Partial<AppConfig> = {};
+    if (fs.existsSync(envConfigPath)) {
+      envConfig = JSON.parse(fs.readFileSync(envConfigPath, 'utf-8'));
+    }
+
+    // Load environment variables
+    const envVars: Partial<AppConfig> = this.loadFromEnv();
+
+    this.instance = {
+      ...defaultConfig,
+      ...envConfig,
+      ...envVars,
+    };
+
+    return this.instance;
+  }
+
+  private static getDefaultConfig(): AppConfig {
+    const appConfigPath = path.join(__dirname, '../../../config/app.json');
+    if (fs.existsSync(appConfigPath)) {
+      return JSON.parse(fs.readFileSync(appConfigPath, 'utf-8'));
+    }
+
+    // Fallback defaults
+    return {
+      appName: 'ERPAuto',
+      version: '1.0.0',
+      logLevel: 'info',
+      browser: {
+        headless: false,
+        slowMo: 50,
+        timeout: 30000,
+      },
+      databases: {
+        sqlServer: {
+          server: '192.168.110.114',
+          database: 'CompanyDB',
+          username: 'peng',
+          password: '',
+          driver: 'ODBC Driver 18 for SQL Server',
+          trustServerCertificate: 'yes',
+        },
+        mysql: {
+          host: 'localhost',
+          port: 3306,
+          database: 'erp_db',
+          username: 'root',
+          password: '',
+        },
+      },
+      erp: {
+        baseUrl: 'https://68.11.34.30:8082',
+        ignoreHttpsErrors: true,
+      },
+      paths: {
+        tempDir: './data/temp',
+        outputDir: './data/output',
+        reportDir: './data/reports',
+      },
+    };
+  }
+
+  private static loadFromEnv(): Partial<AppConfig> {
+    return {
+      databases: {
+        sqlServer: {
+          server: process.env.SQL_SERVER_SERVER || '',
+          database: process.env.SQL_SERVER_DATABASE || '',
+          username: process.env.SQL_SERVER_USERNAME || '',
+          password: process.env.SQL_SERVER_PASSWORD || '',
+          driver: process.env.SQL_SERVER_DRIVER || '',
+          trustServerCertificate: process.env.SQL_SERVER_TRUST_CERT || 'yes',
+        },
+        mysql: {
+          host: process.env.MYSQL_HOST || 'localhost',
+          port: parseInt(process.env.MYSQL_PORT || '3306'),
+          database: process.env.MYSQL_DATABASE || '',
+          username: process.env.MYSQL_USERNAME || '',
+          password: process.env.MYSQL_PASSWORD || '',
+        },
+      },
+    };
+  }
+}
diff --git a/src/main/models/config.types.ts b/src/main/models/config.types.ts
new file mode 100644
index 0000000..c3635ee
--- /dev/null
+++ b/src/main/models/config.types.ts
@@ -0,0 +1,46 @@
+export interface SQLServerConfig {
+  server: string;
+  database: string;
+  username: string;
+  password: string;
+  driver: string;
+  trustServerCertificate?: string;
+}
+
+export interface MySQLConfig {
+  host: string;
+  port: number;
+  database: string;
+  username: string;
+  password: string;
+}
+
+export interface BrowserConfig {
+  headless: boolean;
+  slowMo: number;
+  timeout: number;
+}
+
+export interface ERPConfig {
+  baseUrl: string;
+  ignoreHttpsErrors: boolean;
+}
+
+export interface PathConfig {
+  tempDir: string;
+  outputDir: string;
+  reportDir: string;
+}
+
+export interface AppConfig {
+  appName: string;
+  version: string;
+  logLevel: 'debug' | 'info' | 'warn' | 'error';
+  browser: BrowserConfig;
+  databases: {
+    sqlServer: SQLServerConfig;
+    mysql: MySQLConfig;
+  };
+  erp: ERPConfig;
+  paths: PathConfig;
+}