diff --git a/apps/documents/forms.py b/apps/documents/forms.py
index 8687ae1..7d1bc34 100644
--- a/apps/documents/forms.py
+++ b/apps/documents/forms.py
@@ -5,7 +5,7 @@ from django import forms
 from apps.scenarios.services import ScenarioNotFound, get_scenario
 from apps.scenarios.services import list_scenarios
 
-SUPPORTED_EXTENSIONS = {".txt", ".md", ".pdf", ".docx", ".zip", ".7z"}
+SUPPORTED_EXTENSIONS = {".txt", ".md", ".pdf", ".docx", ".zip", ".7z", ".rar"}
 
 
 class MultipleFileInput(forms.ClearableFileInput):
@@ -52,7 +52,7 @@ class DocumentUploadForm(forms.Form):
             return uploaded_file
         extension = Path(uploaded_file.name).suffix.lower()
         if extension not in SUPPORTED_EXTENSIONS:
-            raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip 和 .7z 文件")
+            raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip、.7z 和 .rar 文件")
         return uploaded_file
 
     def clean_files(self):
@@ -60,7 +60,7 @@ class DocumentUploadForm(forms.Form):
         for uploaded_file in uploaded_files:
             extension = Path(uploaded_file.name).suffix.lower()
             if extension not in SUPPORTED_EXTENSIONS:
-                raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip 和 .7z 文件")
+                raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip、.7z 和 .rar 文件")
         return uploaded_files
 
     def clean(self):
diff --git a/apps/documents/services.py b/apps/documents/services.py
index 429d581..ddbcab7 100644
--- a/apps/documents/services.py
+++ b/apps/documents/services.py
@@ -282,6 +282,11 @@ def _expand_uploaded_files(uploaded_files: list) -> list[dict]:
             expanded_files.extend(extraction["files"])
             warnings.extend(extraction["warnings"])
             continue
+        if extension == ".rar":
+            extraction = _extract_rar_entries(uploaded_file)
+            expanded_files.extend(extraction["files"])
+            warnings.extend(extraction["warnings"])
+            continue
         expanded_files.append(
             {
                 "relative_path": uploaded_file.name,
@@ -435,6 +440,39 @@ def _extract_7z_entries(uploaded_file) -> dict:
     return {"files": entries, "warnings": warnings}
 
 
+def _extract_rar_entries(uploaded_file) -> dict:
+    try:
+        import rarfile
+    except ImportError as exc:
+        raise RuntimeError("处理 .rar 资料包需要安装 rarfile。") from exc
+
+    archive_bytes = uploaded_file.read()
+    uploaded_file.seek(0)
+    entries = []
+    warnings = []
+    with rarfile.RarFile(BytesIO(archive_bytes)) as archive:
+        for info in archive.infolist():
+            if info.is_dir():
+                continue
+            relative_path = info.filename.replace("\\", "/")
+            extension = Path(relative_path).suffix.lower()
+            if extension not in {".txt", ".md", ".pdf", ".docx"}:
+                warnings.append(f"跳过不支持的文件：{relative_path}")
+                continue
+            file_data = archive.read(info.filename)
+            extracted_file = SimpleUploadedFile(
+                Path(relative_path).name,
+                file_data,
+            )
+            entries.append(
+                {
+                    "relative_path": relative_path,
+                    "uploaded_file": extracted_file,
+                }
+            )
+    return {"files": entries, "warnings": warnings}
+
+
 def _detect_document_role(file_name: str) -> str:
     normalized = file_name.lower()
     if "申请表" in file_name:
diff --git a/apps/documents/views.py b/apps/documents/views.py
index 37276ea..8056a9f 100644
--- a/apps/documents/views.py
+++ b/apps/documents/views.py
@@ -76,7 +76,7 @@ def upload(request):
             "form": form,
             "scenarios": list_scenarios(),
             "upload_checks": [
-                "文件格式支持 PDF、DOCX、MD、TXT、ZIP 与 7Z 资料包",
+                "文件格式支持 PDF、DOCX、MD、TXT、ZIP、7Z 与 RAR 资料包",
                 "业务资料与法规依据资料需分开归属",
                 "支持一次上传多份文件并归并到同一个资料包",
                 "目录类文件会优先参与完整性校验",
diff --git a/templates/documents/upload.html b/templates/documents/upload.html
index bd1b5ca..c696a85 100644
--- a/templates/documents/upload.html
+++ b/templates/documents/upload.html
@@ -14,7 +14,7 @@
       <div class="section-heading">
         <div>
           <h2 class="section-title">资料导入向导</h2>
-          <p class="section-copy">当前支持多文件上传，以及 `.txt`、`.md`、`.pdf`、`.docx`、`.zip` 与 `.7z` 资料包。上传成功后会直接形成一个资料包并绑定会话。</p>
+          <p class="section-copy">当前支持多文件上传，以及 `.txt`、`.md`、`.pdf`、`.docx`、`.zip`、`.7z` 与 `.rar` 资料包。上传成功后会直接形成一个资料包并绑定会话。</p>
         </div>
       </div>
       <form method="post" enctype="multipart/form-data" class="stack">
@@ -32,7 +32,7 @@
           {% if form.files.errors %}
             <p class="notice notice-error">{{ form.files.errors|join:" " }}</p>
           {% endif %}
-          <p class="help-text">可一次选择多份文件，或上传一个 zip 资料包。</p>
+          <p class="help-text">可一次选择多份文件，或上传一个 zip / 7z / rar 资料包。</p>
         </div>
         {% if form.errors %}
           <div class="notice notice-error">{{ form.errors }}</div>
diff --git a/tests/test_documents.py b/tests/test_documents.py
index d12e8fd..7b4bd9f 100644
--- a/tests/test_documents.py
+++ b/tests/test_documents.py
@@ -111,6 +111,21 @@ def test_document_upload_form_builds_scenario_choices():
     assert "quality_analysis" in choice_values
 
 
+def test_document_upload_form_accepts_rar_package():
+    form = DocumentUploadForm(
+        data={"scenario_id": "knowledge_qa"},
+        files={
+            "file": SimpleUploadedFile(
+                "registration-package.rar",
+                b"fake-rar-bytes",
+                content_type="application/vnd.rar",
+            )
+        },
+    )
+
+    assert form.is_valid()
+
+
 def test_index_failure_message_is_visible_on_document_list(client, db, monkeypatch):
     document = UploadedDocument.objects.create(
         scenario_id="knowledge_qa",
@@ -336,6 +351,54 @@ def test_import_submission_batch_supports_7z_package_and_preserves_relative_path
     ]
 
 
+def test_import_submission_batch_supports_rar_package_and_preserves_relative_paths(db, monkeypatch):
+    package = SimpleUploadedFile(
+        "registration-package.rar",
+        b"fake-rar-bytes",
+        content_type="application/vnd.rar",
+    )
+
+    class FakeRarInfo:
+        def __init__(self, filename, is_dir=False):
+            self.filename = filename
+            self._is_dir = is_dir
+
+        def is_dir(self):
+            return self._is_dir
+
+    class FakeRarFile:
+        def __init__(self, _file_obj):
+            self.entries = {
+                "CH1/注册申请表.txt": "产品名称：产品A".encode("utf-8"),
+                "CH1/目标产品说明书.txt": "产品名称：产品A".encode("utf-8"),
+            }
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, tb):
+            return False
+
+        def infolist(self):
+            return [FakeRarInfo(name) for name in self.entries]
+
+        def read(self, name):
+            return self.entries[name]
+
+    fake_module = types.SimpleNamespace(RarFile=FakeRarFile)
+    monkeypatch.setitem(sys.modules, "rarfile", fake_module)
+
+    result = import_submission_batch("document_review", [package])
+
+    batch = SubmissionBatch.objects.get(batch_id=result["batch_id"])
+    documents = list(UploadedDocument.objects.filter(batch=batch).order_by("relative_path"))
+    assert batch.file_count == 2
+    assert [document.relative_path for document in documents] == [
+        "CH1/注册申请表.txt",
+        "CH1/目标产品说明书.txt",
+    ]
+
+
 def test_import_submission_batch_records_warnings_for_unsupported_zip_entries(db):
     archive = BytesIO()
     with ZipFile(archive, "w") as zip_file: