diff --git a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractor.java b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractor.java
index e2aa41c3..86e2bdfb 100644
--- a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractor.java
+++ b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractor.java
@@ -44,7 +44,7 @@ public class SkillPackageArchiveExtractor {
         try (ZipInputStream zis = new ZipInputStream(file.getInputStream())) {
             ZipEntry zipEntry;
             while ((zipEntry = zis.getNextEntry()) != null) {
-                if (zipEntry.isDirectory()) {
+                if (isDirectoryEntry(zipEntry)) {
                     zis.closeEntry();
                     continue;
                 }
@@ -164,6 +164,14 @@ public class SkillPackageArchiveExtractor {
         return new ExtractionResult(promoted, warnings);
     }
 
+    /**
+     * {@link ZipEntry#isDirectory()} only recognizes the ZIP-standard forward slash. Some Windows
+     * archive tools emit directory entries whose names end in a backslash instead.
+     */
+    static boolean isDirectoryEntry(ZipEntry entry) {
+        return entry.isDirectory() || entry.getName().endsWith("\\");
+    }
+
     private static boolean isOsMetadataEntry(String name) {
         String normalized = name.replace('\\', '/');
         if (normalized.startsWith("__MACOSX/") || normalized.equals("__MACOSX")) return true;
diff --git a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/ZipPackageExtractor.java b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/ZipPackageExtractor.java
index a23e8cc5..4f8a36b2 100644
--- a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/ZipPackageExtractor.java
+++ b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/support/ZipPackageExtractor.java
@@ -40,7 +40,7 @@ public class ZipPackageExtractor {
         try (ZipInputStream zis = new ZipInputStream(file.getInputStream())) {
             ZipEntry zipEntry;
             while ((zipEntry = zis.getNextEntry()) != null) {
-                if (zipEntry.isDirectory()) {
+                if (SkillPackageArchiveExtractor.isDirectoryEntry(zipEntry)) {
                     zis.closeEntry();
                     continue;
                 }
diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractorTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractorTest.java
index c849fc4c..46dd4f72 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractorTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/SkillPackageArchiveExtractorTest.java
@@ -129,6 +129,25 @@ class SkillPackageArchiveExtractorTest {
         assertEquals("SKILL.md", entries.get(0).path());
     }
 
+    @Test
+    void skipsWindowsStyleDirectoryEntries() throws Exception {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        try (ZipOutputStream zos = new ZipOutputStream(baos)) {
+            zos.putNextEntry(new ZipEntry("my-skill\\"));
+            zos.closeEntry();
+            zos.putNextEntry(new ZipEntry("my-skill\\SKILL.md"));
+            zos.write("---\nname: test\n---".getBytes());
+            zos.closeEntry();
+        }
+        MockMultipartFile file = new MockMultipartFile(
+                "file", "test.zip", "application/zip", baos.toByteArray());
+
+        List<PackageEntry> entries = extractor.extract(file);
+
+        assertEquals(1, entries.size());
+        assertEquals("SKILL.md", entries.get(0).path());
+    }
+
     @Test
     void doesNotStripWhenMultipleRootDirectories() throws Exception {
         byte[] zipBytes = createZip(Map.of(
diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/ZipPackageExtractorTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/ZipPackageExtractorTest.java
index 02f26214..31dc4dce 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/ZipPackageExtractorTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/support/ZipPackageExtractorTest.java
@@ -32,6 +32,26 @@ class ZipPackageExtractorTest {
         assertTrue(entries.stream().noneMatch(e -> e.path().equals("skill.md")));
     }
 
+    @Test
+    void skipsWindowsStyleDirectoryEntries() throws Exception {
+        ZipPackageExtractor extractor = new ZipPackageExtractor(new SkillPublishProperties());
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        try (ZipOutputStream zos = new ZipOutputStream(baos)) {
+            zos.putNextEntry(new ZipEntry("my-skill\\"));
+            zos.closeEntry();
+            zos.putNextEntry(new ZipEntry("my-skill/SKILL.md"));
+            zos.write("---\nname: test\n---\n".getBytes());
+            zos.closeEntry();
+        }
+        MockMultipartFile file = new MockMultipartFile(
+                "file", "test.zip", "application/zip", baos.toByteArray());
+
+        List<PackageEntry> entries = extractor.extract(file);
+
+        assertEquals(1, entries.size());
+        assertEquals("SKILL.md", entries.get(0).path());
+    }
+
     private byte[] createZip(Map<String, byte[]> entries) throws Exception {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try (ZipOutputStream zos = new ZipOutputStream(baos)) {