diff --git a/src/main/java/org/jcnc/snow/cli/SnowCLI.java b/src/main/java/org/jcnc/snow/cli/SnowCLI.java
index 0ce6ba0..d05b0bf 100644
--- a/src/main/java/org/jcnc/snow/cli/SnowCLI.java
+++ b/src/main/java/org/jcnc/snow/cli/SnowCLI.java
@@ -4,6 +4,8 @@ import org.jcnc.snow.cli.api.CLICommand;
 import org.jcnc.snow.cli.commands.*;
 import org.jcnc.snow.cli.utils.CLIUtils;
 import org.jcnc.snow.cli.utils.VersionUtils;
+import org.jcnc.snow.common.Mode;
+import org.jcnc.snow.common.SnowConfig;
 
 import java.util.Arrays;
 import java.util.Map;
diff --git a/src/main/java/org/jcnc/snow/cli/utils/CLIUtils.java b/src/main/java/org/jcnc/snow/cli/utils/CLIUtils.java
index ca36951..efa44b3 100644
--- a/src/main/java/org/jcnc/snow/cli/utils/CLIUtils.java
+++ b/src/main/java/org/jcnc/snow/cli/utils/CLIUtils.java
@@ -26,12 +26,21 @@ public class CLIUtils {
             "-v", "--version"
     );
 
+    /**
+     * 全局调试标志集合，支持 "-debug"、"--debug"。
+     */
+    public static final Set<String> GLOBAL_DEBUG_FLAGS = Set.of(
+            "--debug"
+    );
+
     /**
      * 全局选项列表，包括帮助和版本选项的描述。
      */
     public static final List<Option> GLOBAL_OPTIONS = List.of(
             new Option(List.of("-h", "--help"), "Show this help message and exit"),
-            new Option(List.of("-v", "--version"), "Print snow programming language version and exit")
+            new Option(List.of("-v", "--version"), "Print snow programming language version and exit"),
+            new Option(List.of("-debug", "--debug"), "Enable debug mode with verbose internal logs")
+
     );
 
     /**
diff --git a/src/main/java/org/jcnc/snow/pkg/tasks/CompileTask.java b/src/main/java/org/jcnc/snow/pkg/tasks/CompileTask.java
index c908125..c7423a9 100644
--- a/src/main/java/org/jcnc/snow/pkg/tasks/CompileTask.java
+++ b/src/main/java/org/jcnc/snow/pkg/tasks/CompileTask.java
@@ -154,7 +154,7 @@ public final class CompileTask implements Task {
             String arg = args[i];
             switch (arg) {
                 case "run" -> runAfterCompile = true;
-                case "-debug" -> SnowConfig.MODE = Mode.DEBUG;
+                case "-debug", "--debug" -> SnowConfig.MODE = Mode.DEBUG;
                 case "-o" -> {
                     if (i + 1 < args.length) outputName = args[++i];
                     else {