diff --git a/adapters/src/unity/adapter.rs b/adapters/src/unity/adapter.rs
index 9c1c253..d3f1c5c 100644
--- a/adapters/src/unity/adapter.rs
+++ b/adapters/src/unity/adapter.rs
@@ -21,11 +21,41 @@ impl VersionRange {
     }
 
     /// 检查版本是否在范围内
+    ///
+    /// 按 `(major, minor, patch)` 数值比较，补丁号允许携带 Unity 发布后缀
+    /// （例如 `2021.3.9f1` 按补丁号 9 参与比较）；无法解析的版本一律视为不在范围内。
     pub fn contains(&self, version: &str) -> bool {
-        version >= self.min.as_str() && version <= self.max.as_str()
+        match (
+            parse_version_components(version),
+            parse_version_components(&self.min),
+            parse_version_components(&self.max),
+        ) {
+            (Some(version), Some(min), Some(max)) => version >= min && version <= max,
+            _ => false,
+        }
     }
 }
 
+/// 将 Unity 版本字符串解析为 `(major, minor, patch)` 数值元组。
+///
+/// `major`/`minor` 必须是纯数字；`patch` 取第三段的前导数字，
+/// 以兼容 `2021.3.9f1` 这类带发布后缀的正式版本号。
+fn parse_version_components(version: &str) -> Option<(u64, u64, u64)> {
+    let mut parts = version.split('.');
+    let major = parts.next()?.parse::<u64>().ok()?;
+    let minor = parts.next()?.parse::<u64>().ok()?;
+    let patch_part = parts.next()?;
+    let digit_count = patch_part
+        .chars()
+        .take_while(|character| character.is_ascii_digit())
+        .count();
+    if digit_count == 0 {
+        return None;
+    }
+    let patch = patch_part[..digit_count].parse::<u64>().ok()?;
+    Some((major, minor, patch))
+}
+
 /// 原始 AssetBundle 数据
 #[derive(Debug)]
 pub struct RawAssetBundle {
@@ -175,6 +205,40 @@ mod tests {
         assert!(!range.contains("2021.4.0"));
     }
 
+    #[test]
+    fn test_version_range_compares_patch_numerically() {
+        let range = VersionRange::new("2021.3.0", "2021.3.99");
+
+        assert!(!range.contains("2021.3.100"));
+        assert!(range.contains("2021.3.9"));
+
+        let wide_range = VersionRange::new("2021.3.20", "2021.3.120");
+        assert!(wide_range.contains("2021.3.100"));
+        assert!(!wide_range.contains("2021.3.9"));
+    }
+
+    #[test]
+    fn test_version_range_accepts_release_suffix() {
+        let range = VersionRange::new("2021.3.0", "2021.3.99");
+
+        assert!(range.contains("2021.3.9f1"));
+        assert!(range.contains("2021.3.56f2"));
+        assert!(range.contains("2021.3.99f1"));
+        assert!(!range.contains("2021.3.100f1"));
+    }
+
+    #[test]
+    fn test_version_range_rejects_malformed_versions() {
+        let range = VersionRange::new("2021.3.0", "2021.3.99");
+
+        assert!(!range.contains(""));
+        assert!(!range.contains("unknown"));
+        assert!(!range.contains("2021"));
+        assert!(!range.contains("2021.3"));
+        assert!(!range.contains("2021.x.5"));
+        assert!(!range.contains("2021.3.f1"));
+    }
+
     #[test]
     fn test_raw_assetbundle() {
         let bundle = RawAssetBundle {
diff --git a/adapters/src/unity/unity_2021_3.rs b/adapters/src/unity/unity_2021_3.rs
index 415dbb3..70e23b2 100644
--- a/adapters/src/unity/unity_2021_3.rs
+++ b/adapters/src/unity/unity_2021_3.rs
@@ -436,6 +436,7 @@ mod tests {
 
         assert!(range.contains("2021.3.0"));
         assert!(range.contains("2021.3.56"));
+        assert!(range.contains("2021.3.9f1"));
         assert!(!range.contains("2021.2.0"));
     }