diff --git a/designer_base/src/com/fr/start/Demo.java b/designer_base/src/com/fr/start/Demo.java
index 042a621b3..523c87b79 100644
--- a/designer_base/src/com/fr/start/Demo.java
+++ b/designer_base/src/com/fr/start/Demo.java
@@ -8,42 +8,42 @@ import com.fr.stable.StableUtils;
 import java.io.IOException;
 
 public class Demo {
-	public static void main(String[] args) {
-		String installHome = StableUtils.getInstallHome();
-		if (installHome == null) {
-			FRContext.getLogger().error("Can not find the install home, please check it.");
-			return;
-		}
+    public static void main(String[] args) {
+        String installHome = StableUtils.getInstallHome();
+        if (installHome == null) {
+            FRContext.getLogger().error("Can not find the install home, please check it.");
+            return;
+        }
 
         String executorPath;
 
         if (OperatingSystem.isMacOS()) {
-            executorPath = StableUtils.pathJoin(installHome, "bin", "designer.app --args demo");
+            executorPath = StableUtils.pathJoin(installHome, "bin", "designer.app");
         } else {
             executorPath = StableUtils.pathJoin(installHome, "bin", "designer.exe demo");
         }
-		if (!new java.io.File(executorPath).exists()) {
-			FRContext.getLogger().error(executorPath + " can not be found.");
-		}
+        if (!new java.io.File(executorPath).exists()) {
+            FRContext.getLogger().error(executorPath + " can not be found.");
+        }
 
         if (OperatingSystem.isMacOS()) {
-        	ProcessBuilder builder = new ProcessBuilder();
-            builder.command("open -a", executorPath);
+            ProcessBuilder builder = new ProcessBuilder();
+            builder.command("open", "-a", executorPath, "--args", "demo");
             try {
                 builder.start();
             } catch (IOException e) {
                 FRContext.getLogger().error(e.getMessage(), e);
             }
         } else {
-        	// ProcessBuilder这种方式在window下报错：系统找不到指定文件
-        	Runtime rt = Runtime.getRuntime();
-        	try {
-				rt.exec(executorPath);
-			} catch (IOException e) {
-				FRContext.getLogger().error(e.getMessage(), e);
-			}
+            // ProcessBuilder这种方式在window下报错：系统找不到指定文件
+            Runtime rt = Runtime.getRuntime();
+            try {
+                rt.exec(executorPath);
+            } catch (IOException e) {
+                FRContext.getLogger().error(e.getMessage(), e);
+            }
         }
 
-		System.exit(0);
-	}
+        System.exit(0);
+    }
 }
\ No newline at end of file