diff --git a/yuthon_ai_agent/controllers/main.py b/yuthon_ai_agent/controllers/main.py
index 237717d71..18fb9fbb9 100644
--- a/yuthon_ai_agent/controllers/main.py
+++ b/yuthon_ai_agent/controllers/main.py
@@ -249,10 +249,10 @@ class AiChatController(http.Controller):
         ocr_error = ''
         if provider and provider.ocr_enabled:
             from ..models.ocr_provider import get_ocr_instance
-            ocr = get_ocr_instance(provider)
+            ocr, init_err = get_ocr_instance(provider)
             if ocr is None:
-                ocr_error = 'OCR 实例创建失败，请检查 SecretId/SecretKey 是否完整'
-                _logger.error('[AI-OCR] get_ocr_instance 返回 None')
+                ocr_error = init_err or 'OCR 实例创建失败'
+                _logger.error('[AI-OCR] get_ocr_instance 失败: %s', ocr_error)
             else:
                 result = ocr.smart_recognize(raw_bytes, mimetype)
                 if result.get('success'):
diff --git a/yuthon_ai_agent/models/ocr_provider.py b/yuthon_ai_agent/models/ocr_provider.py
index c7df34e47..7ecb3f5d4 100644
--- a/yuthon_ai_agent/models/ocr_provider.py
+++ b/yuthon_ai_agent/models/ocr_provider.py
@@ -146,21 +146,28 @@ def get_ocr_instance(provider):
     """从 AiProvider 记录中创建 OCR 实例。
 
     :param provider: ai.provider 记录
-    :return: TencentOCR 实例或 None
+    :return: (TencentOCR 实例 | None, str 错误原因)
     """
     if not provider.ocr_enabled:
-        return None
-    if not provider.ocr_secret_id or not provider.ocr_secret_key:
-        _logger.warning('OCR 已启用但 SecretId/SecretKey 未配置 (provider=%s)', provider.name)
-        return None
+        return None, 'OCR 未启用'
+
+    # 逐项校验，给出精确的错误信息
+    if not provider.ocr_secret_id:
+        return None, '未配置 SecretId（请到服务商配置 → OCR配置 填写）'
+    if not provider.ocr_secret_key:
+        return None, '未配置 SecretKey（请到服务商配置 → OCR配置 填写）'
     if not HAS_TENCENT_SDK:
-        return None
+        return None, 'tencentcloud-sdk-python 未安装（pip install tencentcloud-sdk-python）'
+
     try:
         return TencentOCR(
             secret_id=provider.ocr_secret_id,
             secret_key=provider.ocr_secret_key,
             region=provider.ocr_region or 'ap-guangzhou',
-        )
+        ), ''
+    except ValueError as ve:
+        _logger.warning('[AI-OCR] 参数错误: %s', ve)
+        return None, str(ve)
     except Exception as e:
-        _logger.exception('创建 OCR 实例失败')
-        return None
+        _logger.exception('[AI-OCR] 创建 OCR 实例异常')
+        return None, f'初始化异常: {e}'
diff --git a/yuthon_ai_agent/static/src/js/ai_chat_action.js b/yuthon_ai_agent/static/src/js/ai_chat_action.js
index 5e836be38..c0f784c49 100644
--- a/yuthon_ai_agent/static/src/js/ai_chat_action.js
+++ b/yuthon_ai_agent/static/src/js/ai_chat_action.js
@@ -35,17 +35,7 @@ export class AiChatAction extends Component {
             .replace(/【附件：[^】]+】[\s\S]*?--- 附件内容结束 ---/g, '')
             .replace(/\[附件[：:]\s*[^\]]+\]\n?/g, '')
             .trim() || safe;
-        // URL → 精美卡片（还原 escapeHtml 把 & 变回 &，保证 href 正确）
-        display = display.replace(
-            /(https?:\/\/[^\s<>"'\u4e00-\u9fff\u3000-\u303f\uff00-\uffef]+)/g,
-            (url) => {
-                const rawUrl = url.replace(/&amp;/g, '&');
-                let domain = '';
-                try { domain = new URL(rawUrl).hostname; } catch (_) { domain = rawUrl.substring(0, 50); }
-                const displayUrl = rawUrl.length > 60 ? rawUrl.substring(0, 57) + '...' : rawUrl;
-                return `<a class="o_ai_link_card" href="${rawUrl}" target="_blank" rel="noopener noreferrer" title="${rawUrl}"><span class="o_ai_link_icon"><i class="fa fa-external-link"></i></span><span class="o_ai_link_domain">${this._escapeHtml(domain)}</span><span class="o_ai_link_url">${this._escapeHtml(displayUrl)}</span></a>`;
-            }
-        );
+        // 不做额外处理，URL 保持纯文本显示
         return display.replace(/\n/g, '<br>');
     }
 
diff --git a/yuthon_ai_agent/static/src/js/ai_floating.js b/yuthon_ai_agent/static/src/js/ai_floating.js
index 1af429ac3..e0f36358b 100644
--- a/yuthon_ai_agent/static/src/js/ai_floating.js
+++ b/yuthon_ai_agent/static/src/js/ai_floating.js
@@ -235,22 +235,7 @@ function renderContent(text) {
         .replace(/【附件：[^】]+】[\s\S]*?--- 附件内容结束 ---/g, '')
         .replace(/\[附件[：:]\s*[^\]]+\]\n?/g, '')
         .trim() || safe;  // 若 strip 后为空，回退到 safe 继续处理 URL
-    // URL 渲染为精美卡片（先还原 escapeHtml 把 &amp; 变回 &，保证 href 正确）
-    display = display.replace(
-        /(https?:\/\/[^\s<>"'\u4e00-\u9fff\u3000-\u303f\uff00-\uffef]+)/g,
-        (url) => {
-            // 还原 HTML 实体（escapeHtml 会把 & 变成 &amp;，URL 参数中的 & 需要还原）
-            const rawUrl = url.replace(/&amp;/g, '&');
-            let domain = '';
-            try {
-                domain = new URL(rawUrl).hostname;
-            } catch (_) {
-                domain = rawUrl.substring(0, 50);
-            }
-            const displayUrl = rawUrl.length > 60 ? rawUrl.substring(0, 57) + '...' : rawUrl;
-            return `<a class="o_ai_link_card" href="${rawUrl}" target="_blank" rel="noopener noreferrer" title="${rawUrl}"><span class="o_ai_link_icon"><i class="fa fa-external-link"></i></span><span class="o_ai_link_domain">${escapeHtml(domain)}</span><span class="o_ai_link_url">${escapeHtml(displayUrl)}</span></a>`;
-        }
-    );
+    // 不做额外处理，URL 保持纯文本显示
     // 换行转 <br>
     display = display.replace(/\n/g, '<br>');
     return display;