diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 9c069b12f6f..4e150857f6d 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -44,6 +44,9 @@
   <PropertyGroup Condition="'$(BUILD_OS)' == 'Linux' AND '$(PackageRuntime)' == 'linux-arm64'">
     <DefineConstants>$(DefineConstants);ARM64</DefineConstants>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(BUILD_OS)' == 'Linux' AND '$(PackageRuntime)' == 'linux-loongarch64'">
+    <DefineConstants>$(DefineConstants);LOONGARCH64</DefineConstants>
+  </PropertyGroup>
 
   <!-- Set TRACE/DEBUG vars -->
   <PropertyGroup>
diff --git a/src/Runner.Common/Constants.cs b/src/Runner.Common/Constants.cs
index 03d01b6288d..99613802ac2 100644
--- a/src/Runner.Common/Constants.cs
+++ b/src/Runner.Common/Constants.cs
@@ -59,7 +59,8 @@ public enum Architecture
             X86,
             X64,
             Arm,
-            Arm64
+            Arm64,
+            LoongArch64
         }
 
         public static class Runner
@@ -82,6 +83,8 @@ public static class Runner
             public static readonly Architecture PlatformArchitecture = Architecture.Arm;
 #elif ARM64
             public static readonly Architecture PlatformArchitecture = Architecture.Arm64;
+#elif LOONGARCH64
+            public static readonly Architecture PlatformArchitecture = Architecture.LoongArch64;
 #else
             public static readonly Architecture PlatformArchitecture = Architecture.X64;
 #endif
diff --git a/src/Runner.Common/Util/VarUtil.cs b/src/Runner.Common/Util/VarUtil.cs
index 97273a1adb3..3b7795de7e7 100644
--- a/src/Runner.Common/Util/VarUtil.cs
+++ b/src/Runner.Common/Util/VarUtil.cs
@@ -53,6 +53,8 @@ public static string OSArchitecture
                         return "ARM";
                     case Constants.Architecture.Arm64:
                         return "ARM64";
+                    case Constants.Architecture.LoongArch64:
+                        return "LOONGARCH64";
                     default:
                         throw new NotSupportedException(); // Should never reach here.
                 }
diff --git a/src/Test/L0/ConstantGenerationL0.cs b/src/Test/L0/ConstantGenerationL0.cs
index f3c1b8f9eaf..4bbd5b0e61b 100644
--- a/src/Test/L0/ConstantGenerationL0.cs
+++ b/src/Test/L0/ConstantGenerationL0.cs
@@ -20,6 +20,7 @@ public void BuildConstantGenerateSucceed()
                 "linux-x64",
                 "linux-arm",
                 "linux-arm64",
+                "linux-loongarch64",
                 "osx-x64",
                 "osx-arm64"
             };