diff --git a/frontend/scene-generator/llm-client.js b/frontend/scene-generator/llm-client.js
index aaf7a27..14d473f 100644
--- a/frontend/scene-generator/llm-client.js
+++ b/frontend/scene-generator/llm-client.js
@@ -70,7 +70,8 @@ function buildAnalyzePrompt(sourceDir, dirContents) {
     parts.push(`\n=== 脚本文件 ===`);
     for (const [name, content] of Object.entries(dirContents.scripts)) {
       parts.push(`\n--- ${name} ---`);
-      parts.push(content.substring(0, 2000));
+      const contentStr = typeof content === 'string' ? content : String(content || '');
+      parts.push(contentStr.substring(0, 2000));
     }
   }
 
@@ -99,7 +100,7 @@ function buildDeepAnalyzePrompt(sourceDir, dirContents, indexHtmlContent) {
   }
 
   // Include index.html content (key addition)
-  if (indexHtmlContent) {
+  if (indexHtmlContent && typeof indexHtmlContent === 'string') {
     parts.push(`\n=== index.html ===`);
     // Limit to first 15000 chars to avoid token limits
     parts.push(indexHtmlContent.substring(0, 15000));
@@ -109,7 +110,8 @@ function buildDeepAnalyzePrompt(sourceDir, dirContents, indexHtmlContent) {
     parts.push(`\n=== 脚本文件 ===`);
     for (const [name, content] of Object.entries(dirContents.scripts)) {
       parts.push(`\n--- ${name} ---`);
-      parts.push(content.substring(0, 3000));
+      const contentStr = typeof content === 'string' ? content : String(content || '');
+      parts.push(contentStr.substring(0, 3000));
     }
   }
 
diff --git a/frontend/scene-generator/sg_scene_generator.html b/frontend/scene-generator/sg_scene_generator.html
index 279d333..68f8496 100644
--- a/frontend/scene-generator/sg_scene_generator.html
+++ b/frontend/scene-generator/sg_scene_generator.html
@@ -493,9 +493,12 @@
       const apiCount = document.getElementById("previewApiCount");
       if (data.apiEndpoints && data.apiEndpoints.length > 0) {
         apiCount.textContent = data.apiEndpoints.length;
-        apiList.innerHTML = data.apiEndpoints.map(ep =>
-          `<div class="preview-list-item">${escapeHtml(ep)}</div>`
-        ).join("");
+        apiList.innerHTML = data.apiEndpoints.map(ep => {
+          const name = escapeHtml(ep.name || "unknown");
+          const url = escapeHtml(ep.url || "");
+          const method = escapeHtml(ep.method || "GET");
+          return `<div class="preview-list-item"><strong>${name}</strong>: ${url} <span style="color: var(--muted);">[${method}]</span></div>`;
+        }).join("");
       } else {
         apiCount.textContent = "0";
         apiList.innerHTML = '<div class="preview-list-item" style="color: var(--muted);">无</div>';
@@ -506,9 +509,11 @@
       const colCount = document.getElementById("previewColumnCount");
       if (data.columnDefs && data.columnDefs.length > 0) {
         colCount.textContent = data.columnDefs.length;
-        colList.innerHTML = data.columnDefs.map(col =>
-          `<div class="preview-list-item">${escapeHtml(col)}</div>`
-        ).join("");
+        colList.innerHTML = data.columnDefs.map(col => {
+          const field = escapeHtml(Array.isArray(col) ? col[0] : (col.field || ""));
+          const label = escapeHtml(Array.isArray(col) ? col[1] : (col.label || ""));
+          return `<div class="preview-list-item"><code>${field}</code> → ${label}</div>`;
+        }).join("");
       } else {
         colCount.textContent = "0";
         colList.innerHTML = '<div class="preview-list-item" style="color: var(--muted);">无</div>';