diff --git a/src/pages/KnowledgeBase/Detail/components/DocumentList.jsx b/src/pages/KnowledgeBase/Detail/components/DocumentList.jsx
index 2954eeb..f7fe2a5 100644
--- a/src/pages/KnowledgeBase/Detail/components/DocumentList.jsx
+++ b/src/pages/KnowledgeBase/Detail/components/DocumentList.jsx
@@ -73,7 +73,7 @@ const DocumentList = ({ knowledgeBaseId }) => {
                                 <td>
                                     <div className='btn-group' role='group'>
                                         <button
-                                            className='btn btn-sm btn-outline-primary me-2'
+                                            className='btn btn-sm btn-outline-primary me-2 d-none'
                                             onClick={() => handlePreviewDocument(doc.document_id)}
                                         >
                                             预览
diff --git a/src/pages/KnowledgeBase/Detail/components/DocumentPreviewModal.jsx b/src/pages/KnowledgeBase/Detail/components/DocumentPreviewModal.jsx
index ca70e3f..94973e2 100644
--- a/src/pages/KnowledgeBase/Detail/components/DocumentPreviewModal.jsx
+++ b/src/pages/KnowledgeBase/Detail/components/DocumentPreviewModal.jsx
@@ -118,7 +118,7 @@ const DocumentPreviewModal = ({ show, documentId, knowledgeBaseId, onClose }) =>
                     )}
                 </div>
                 <div className='modal-footer'>
-                    <button type='button' className='btn btn-secondary' onClick={onClose}>
+                    <button type='button' className='btn btn-outline-secondary' onClick={onClose}>
                         关闭
                     </button>
                 </div>