diff --git a/Assets/YooAsset/Editor/MacrosProcessor.cs b/Assets/YooAsset/Editor/MacrosProcessor.cs
new file mode 100644
index 00000000..465ee5ff
--- /dev/null
+++ b/Assets/YooAsset/Editor/MacrosProcessor.cs
@@ -0,0 +1,126 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Xml;
+using UnityEditor;
+using UnityEngine;
+
+namespace YooAsset.Editor
+{
+    [InitializeOnLoad]
+    class YooMacrosProcessor : AssetPostprocessor
+    {
+        static readonly List<string> YooAssertMacros = new List<string>()
+        {
+            "YOO_VERSION_2",
+            "YOO_VERSION_2_3_4",
+            "YOO_VERSION_2_3_4_OR_NEWER",
+        };
+        static string OnGeneratedCSProject(string path, string content)
+        {
+            XmlDocument xmlDoc = new XmlDocument();
+            xmlDoc.LoadXml(content);
+
+            if (!IsCSProjectReferenced(xmlDoc.DocumentElement))
+            {
+                return content;
+            }
+
+            if (!ProcessDefineConstants(xmlDoc.DocumentElement, YooAssertMacros))
+            {
+                return content;
+            }
+
+            StringWriter sw = new StringWriter();
+            XmlWriter writer = XmlWriter.Create(sw, new XmlWriterSettings()
+            {
+                Indent = true,
+            });
+            xmlDoc.WriteTo(writer);
+            writer.Flush();
+
+            return sw.ToString();
+        }
+
+        static bool ProcessDefineConstants(XmlElement element, List<string> macros)
+        {
+            if (element == null)
+            {
+                return false;
+            }
+
+            bool processed = false;
+            if (macros == null || macros.Count == 0)
+            {
+                return processed;
+            }
+
+            foreach (XmlNode node in element.ChildNodes)
+            {
+                if (node.Name != "PropertyGroup")
+                {
+                    continue;
+                }
+
+                foreach (XmlNode childNode in node.ChildNodes)
+                {
+                    if (childNode.Name != "DefineConstants")
+                    {
+                        continue;
+                    }
+
+                    string[] defines = childNode.InnerText.Split(';');
+                    HashSet<string> hs = new HashSet<string>(defines);
+
+                    string tmpMacro = string.Empty;
+                    foreach (string macro in macros)
+                    {
+                        tmpMacro = macro.Trim();
+                        if (string.IsNullOrEmpty(tmpMacro))
+                            continue;
+                        //加入YooAsset定义的宏
+                        hs.Add(tmpMacro);
+                    }
+                    //更新节点InnerText
+                    childNode.InnerText = string.Join(";", hs.ToArray());
+
+                    processed = true;
+                }
+            }
+
+            return processed;
+        }
+
+        static bool IsCSProjectReferenced(XmlElement element)
+        {
+            if (element == null)
+            {
+                return false;
+            }
+
+            foreach (XmlNode node in element.ChildNodes)
+            {
+                if (node.Name != "ItemGroup")
+                {
+                    continue;
+                }
+                foreach (XmlNode childNode in node.ChildNodes)
+                {
+                    if (childNode.Name != "Reference" && childNode.Name != "ProjectReference")
+                    {
+                        continue;
+                    }
+                    //工程引用了YooAsset
+                    string include = childNode.Attributes["Include"].Value;
+                    if (include.Contains("YooAsset"))
+                    {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+    }
+
+}
diff --git a/Assets/YooAsset/Editor/MacrosProcessor.cs.meta b/Assets/YooAsset/Editor/MacrosProcessor.cs.meta
new file mode 100644
index 00000000..89d654cd
--- /dev/null
+++ b/Assets/YooAsset/Editor/MacrosProcessor.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 88d5a41d078a82e40b82265ed4c3631a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Runtime/YooAsset.asmdef b/Assets/YooAsset/Runtime/YooAsset.asmdef
index e61c9d1b..f363ce42 100644
--- a/Assets/YooAsset/Runtime/YooAsset.asmdef
+++ b/Assets/YooAsset/Runtime/YooAsset.asmdef
@@ -9,6 +9,16 @@
     "precompiledReferences": [],
     "autoReferenced": true,
     "defineConstraints": [],
-    "versionDefines": [],
+    "versionDefines": [
+        {
+            "name": "com.tuyoogame.yooasset",
+            "define": "YOO_VERSION_2_3_4"
+        },
+        {
+            "name": "com.tuyoogame.yooasset",
+            "expression": "2.3.4",
+            "define": "YOO_VERSION_2_3_4_OR_NEWER"
+        }
+    ],
     "noEngineReferences": false
 }
\ No newline at end of file