diff --git a/modules/routes/api_knowledge.py b/modules/routes/api_knowledge.py
new file mode 100644
index 0000000..546ba39
--- /dev/null
+++ b/modules/routes/api_knowledge.py
@@ -0,0 +1,81 @@
+"""
+知识库 API
+"""
+import uuid
+from datetime import datetime
+from flask import Blueprint, request, jsonify
+from config import KNOWLEDGE_FILE
+from utils import load_data, save_data
+
+knowledge_bp = Blueprint('api_knowledge', __name__)
+
+
+@knowledge_bp.route('/api/knowledge')
+def api_knowledge():
+    knowledge = load_data(KNOWLEDGE_FILE)
+    hide_hidden = request.args.get('all', '0') == '0'
+    if hide_hidden:
+        knowledge = [k for k in knowledge if k.get('visible', True)]
+    keyword = request.args.get('q', '').strip().lower()
+    if keyword:
+        knowledge = [k for k in knowledge if keyword in k.get('title', '').lower() or
+                     keyword in k.get('content', '').lower()]
+    category = request.args.get('category', '')
+    if category:
+        knowledge = [k for k in knowledge if k.get('category') == category]
+    return jsonify(sorted(knowledge, key=lambda x: x.get('order', 0)))
+
+
+@knowledge_bp.route('/api/knowledge/<knowledge_id>')
+def api_knowledge_detail(knowledge_id):
+    knowledge = load_data(KNOWLEDGE_FILE)
+    item = next((k for k in knowledge if k['id'] == knowledge_id), None)
+    if not item:
+        return jsonify({'error': 'Knowledge not found'}), 404
+    return jsonify(item)
+
+
+@knowledge_bp.route('/api/knowledge', methods=['POST'])
+def api_create_knowledge():
+    data = request.get_json()
+    knowledge = load_data(KNOWLEDGE_FILE)
+    data['id'] = uuid.uuid4().hex[:12]
+    data['created_at'] = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+    data['visible'] = data.get('visible', True)
+    if 'order' not in data:
+        data['order'] = len(knowledge)
+    knowledge.append(data)
+    save_data(KNOWLEDGE_FILE, knowledge)
+    return jsonify(data)
+
+
+@knowledge_bp.route('/api/knowledge/<knowledge_id>', methods=['PUT'])
+def api_update_knowledge(knowledge_id):
+    data = request.get_json()
+    knowledge = load_data(KNOWLEDGE_FILE)
+    item = next((k for k in knowledge if k['id'] == knowledge_id), None)
+    if not item:
+        return jsonify({'error': 'Knowledge not found'}), 404
+    item.update(data)
+    item['updated_at'] = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+    save_data(KNOWLEDGE_FILE, knowledge)
+    return jsonify(item)
+
+
+@knowledge_bp.route('/api/knowledge/<knowledge_id>', methods=['DELETE'])
+def api_delete_knowledge(knowledge_id):
+    knowledge = load_data(KNOWLEDGE_FILE)
+    knowledge = [k for k in knowledge if k['id'] != knowledge_id]
+    save_data(KNOWLEDGE_FILE, knowledge)
+    return jsonify({'success': True})
+
+
+@knowledge_bp.route('/api/knowledge/<knowledge_id>/visible', methods=['POST'])
+def api_toggle_knowledge_visible(knowledge_id):
+    knowledge = load_data(KNOWLEDGE_FILE)
+    item = next((k for k in knowledge if k['id'] == knowledge_id), None)
+    if not item:
+        return jsonify({'error': 'Knowledge not found'}), 404
+    item['visible'] = not item.get('visible', True)
+    save_data(KNOWLEDGE_FILE, knowledge)
+    return jsonify({'success': True, 'visible': item['visible']})