diff --git a/app.py b/app.py
index 4d67c30..312a033 100644
--- a/app.py
+++ b/app.py
@@ -129,6 +129,25 @@ def upload_file():
     
     return jsonify({'error': '不支持的文件格式'}), 400
 
+@app.route('/delete/<filename>', methods=['POST'])
+def delete_file(filename):
+    """删除指定的单个文件"""
+    try:
+        filename = secure_filename(filename)
+        upload_folder = app.config['UPLOAD_FOLDER']
+        filepath = os.path.join(upload_folder, filename)
+
+        if os.path.exists(filepath):
+            os.remove(filepath)
+            return jsonify({
+                'success': True,
+                'message': f'文件 {filename} 已成功删除'
+            })
+        else:
+            return jsonify({'error': '文件不存在'}), 404
+    except Exception as e:
+        return jsonify({'error': f'删除文件失败: {str(e)}'}), 500
+
 @app.route('/cleanup', methods=['POST'])
 def cleanup_files():
     """清理上传的文件（立即清理）"""
diff --git a/static/css/style.css b/static/css/style.css
index e304f05..a0ec36a 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -244,7 +244,7 @@ body {
 
 .file-tag {
     font-size: 12px;
-    padding: 4px 12px;
+    padding: 4px 8px 4px 12px;
     background: rgba(255, 255, 255, 0.6);
     border: 1px solid #e2e8f0;
     border-radius: 20px;
@@ -252,6 +252,9 @@ body {
     cursor: pointer;
     white-space: nowrap;
     transition: all 0.2s;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
 }
 
 .file-tag.active {
@@ -261,6 +264,33 @@ body {
     font-weight: 500;
 }
 
+.delete-file-btn {
+    width: 18px;
+    height: 18px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 50%;
+    transition: all 0.2s;
+    color: var(--text-tertiary);
+    font-size: 10px;
+}
+
+.delete-file-btn:hover {
+    background: rgba(239, 68, 68, 0.1);
+    color: #ef4444;
+    transform: scale(1.1);
+}
+
+.file-tag.active .delete-file-btn {
+    color: var(--primary-light);
+}
+
+.file-tag.active .delete-file-btn:hover {
+    background: rgba(239, 68, 68, 0.2);
+    color: #ef4444;
+}
+
 /* Dashboard Grid */
 .summary-cards {
     display: grid;
diff --git a/static/js/main.js b/static/js/main.js
index ca64f72..c596645 100644
--- a/static/js/main.js
+++ b/static/js/main.js
@@ -356,11 +356,35 @@ function renderFileList(files) {
     elements.fileSelector.style.display = 'flex';
     elements.fileList.innerHTML = files.map(f => `
                 <div class="file-tag ${f.filename === state.currentFile ? 'active' : ''}" onclick="loadFile('${f.filename}')">
-                    ${f.original_name}
+                    <span class="file-name">${f.original_name}</span>
+                    <i class="fas fa-times delete-file-btn" onclick="deleteFile('${f.filename}', event)" title="删除此文件"></i>
                 </div>
             `).join('');
 }
 
+function deleteFile(filename, event) {
+    if (event) event.stopPropagation();
+    if (!confirm('确认删除此文件？')) return;
+
+    fetch(`/delete/${filename}`, { method: 'POST' })
+        .then(res => res.json())
+        .then(data => {
+            if (data.success) {
+                if (state.currentFile === filename) {
+                    state.currentFile = null;
+                    state.allData = null;
+                    state.filteredData = null;
+                    elements.noData.style.display = 'flex';
+                    elements.dataDisplay.style.display = 'none';
+                }
+                loadFileList();
+            } else {
+                alert(data.error || '删除失败');
+            }
+        })
+        .catch(err => alert('删除错误: ' + err.message));
+}
+
 // --- Utils ---
 
 function openUploadModal() {