diff --git a/app/api/evaluate/route.ts b/app/api/evaluate/route.ts
index 07a723b..6c13faf 100644
--- a/app/api/evaluate/route.ts
+++ b/app/api/evaluate/route.ts
@@ -263,7 +263,7 @@ export async function POST(request: NextRequest) {
           score: score,
           max_score: maxScore,
           weight: criteriaItem.weight,
-          weighted_score: (score / maxScore) * criteriaItem.weight,
+          weighted_score: (score / maxScore) * (criteriaItem.weight / 100),
           percentage: (score / maxScore) * 100
         };
 
@@ -274,7 +274,7 @@ export async function POST(request: NextRequest) {
           score: score,
           max_score: maxScore,
           weight: criteriaItem.weight,
-          weighted_score: (score / maxScore) * criteriaItem.weight,
+          weighted_score: (score / maxScore) * (criteriaItem.weight / 100),
           percentage: (score / maxScore) * 100
         });
 
diff --git a/app/api/evaluation/[id]/download/route.ts b/app/api/evaluation/[id]/download/route.ts
index a3f5256..d56ce40 100644
--- a/app/api/evaluation/[id]/download/route.ts
+++ b/app/api/evaluation/[id]/download/route.ts
@@ -85,7 +85,7 @@ export async function GET(
       overview: {
         excellentItems: evaluationWithDetails.excellent_items || 0,
         improvementItems: evaluationWithDetails.improvement_items || 0,
-        overallPerformance: Number(evaluationWithDetails.overall_score) || 0
+        overallPerformance: Math.round(Number(evaluationWithDetails.overall_score) || 0)
       },
       improvementSuggestions: {
         overallSuggestions: feedbackByType.overall[0]?.content || '無詳細分析',
diff --git a/app/api/evaluation/[id]/route.ts b/app/api/evaluation/[id]/route.ts
index 62023b5..cbb8d69 100644
--- a/app/api/evaluation/[id]/route.ts
+++ b/app/api/evaluation/[id]/route.ts
@@ -109,7 +109,7 @@ export async function GET(
       overview: {
         excellentItems: evaluationWithDetails.excellent_items || 0,
         improvementItems: evaluationWithDetails.improvement_items || 0,
-        overallPerformance: Number(evaluationWithDetails.overall_score) || 0
+        overallPerformance: Math.round(Number(evaluationWithDetails.overall_score) || 0)
       },
       detailedAnalysis: {
         summary: feedbackByType.overall[0]?.content || '無詳細分析',
diff --git a/app/results/results-content.tsx b/app/results/results-content.tsx
index 08d8827..a2857ab 100644
--- a/app/results/results-content.tsx
+++ b/app/results/results-content.tsx
@@ -103,7 +103,7 @@ const calculateMockOverview = (criteria: any[]) => {
   const improvementItems = criteria.filter(item => item.score < averageScore).length;
   
   // 整體表現：基於權重的加權平均分數
-  const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * item.weight, 0));
+  const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * (item.weight / 100), 0));
   
   return {
     excellentItems,
@@ -254,7 +254,7 @@ export default function ResultsContent() {
     const improvementItems = criteria.filter(item => item.score < averageScore).length;
     
     // 整體表現：基於權重的加權平均分數
-    const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * item.weight, 0));
+    const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * (item.weight / 100), 0) * 10) / 10;
     
     return {
       excellentItems,
@@ -263,9 +263,24 @@ export default function ResultsContent() {
     };
   };
 
+  // 重新計算基於權重的總分
+  const calculateWeightedTotalScore = (criteria: any[]): number => {
+    if (!criteria || criteria.length === 0) return 0;
+    
+    const totalScore = criteria.reduce((sum, item) => {
+      const weightedScore = (item.score / item.maxScore) * (item.weight / 100);
+      return sum + weightedScore;
+    }, 0);
+    
+    // 將小數轉換為100分制的分數，保留一位小數
+    return Math.round(totalScore * 100 * 10) / 10; // 保留一位小數
+  };
+
   // 確保所有必要的數據結構存在
   const safeResults = {
     ...results,
+    // 重新計算總分
+    overallScore: calculateWeightedTotalScore(results.criteria || []),
     overview: results.overview || calculateOverview(results.criteria || []),
     chartData: results.chartData || {
       barChart: [],
diff --git a/lib/services/gemini.ts b/lib/services/gemini.ts
index 587a371..baf1022 100644
--- a/lib/services/gemini.ts
+++ b/lib/services/gemini.ts
@@ -145,7 +145,17 @@ ${criteriaList}
        **評分要求:**
        1. 請對每個評分項目給出 0 到滿分的分數，要敢於給出極高分(9-10分)和極低分(1-3分)
        2. 為每個項目提供具體的評分理由、優點和改進建議
-       3. 計算總分（各項目分數 × 權重比例）
+       3. **重要：計算總分時，請嚴格按照以下步驟：**
+          - 步驟1：計算每個項目的加權分數 = (該項目得分 ÷ 該項目滿分) × 該項目權重百分比
+          - 步驟2：將所有項目的加權分數相加得到總分
+          - 步驟3：檢查計算結果是否正確
+          - **計算範例：**
+            * 應用實務性：8/10 × 30% = 0.8 × 30 = 24分
+            * 創新性：6/10 × 15% = 0.6 × 15 = 9分
+            * 成效與效益：9/10 × 25% = 0.9 × 25 = 22.5分
+            * 擴散與可複用性：7/10 × 20% = 0.7 × 20 = 14分
+            * 簡報與表達：8/10 × 10% = 0.8 × 10 = 8分
+            * **總分 = 24 + 9 + 22.5 + 14 + 8 = 77.5分**
        4. 提供整體評價和建議
        5. 分析優秀項目和待改進項目的數量
        6. 給出等級評比 (S、A+、A、A-、B+、B、B-、C、D)
@@ -156,7 +166,7 @@ ${criteriaList}
 **回應格式 (請嚴格按照以下 JSON 格式回應):**
 {
   "projectTitle": "專案標題",
-  "overallScore": 總分數字,
+  "overallScore": 總分數字（必須是根據加權公式計算的正確總分，請仔細計算每個項目的加權分數後相加，例如：77.5）,
   "totalPossible": 100,
   "grade": "等級評比",
   "performanceStatus": "表現狀態",
@@ -239,6 +249,12 @@ ${criteriaList}
   }
 }
 
+**重要提醒：在回應前，請務必檢查以下計算：**
+1. 列出每個項目的得分和權重
+2. 計算每個項目的加權分數：(得分÷滿分) × 權重百分比
+3. 將所有加權分數相加得到總分
+4. 確認總分是否正確
+
 請確保回應是有效的 JSON 格式，不要包含任何其他文字。
     `.trim();
   }
@@ -308,8 +324,8 @@ ${criteriaList}
     console.log('   優秀項目 (≥' + averageScore + '):', excellentItems);
     console.log('   待改進項目 (<' + averageScore + '):', improvementItems);
     
-    // 整體表現：基於權重的加權平均分數
-    const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * item.weight, 0));
+    // 整體表現：基於權重的加權平均分數（百分比）
+    const overallPerformance = Math.round(criteria.reduce((sum, item) => sum + (item.score / item.maxScore) * (item.weight / 100), 0) * 100);
 
     return {
       excellentItems,
@@ -331,7 +347,7 @@ ${criteriaList}
       })),
       pieChart: criteria.map(item => ({
         name: item.name,
-        value: item.weightedScore || (item.score / item.maxScore) * item.weight,
+        value: item.weightedScore || (item.score / item.maxScore) * (item.weight / 100),
         weight: item.weight
       })),
       radarChart: criteria.map(item => ({
@@ -387,14 +403,25 @@ ${criteriaList}
   private static convertToProjectEvaluation(parsed: any, criteria: CriteriaItem[]): ProjectEvaluation {
     console.log('🔄 轉換完整格式回應...');
 
-    // 計算總分
+    // 計算總分 - 總是重新計算，不直接使用 AI 的 overallScore
     let totalScore = 0;
-    if (parsed.overallScore) {
-      totalScore = Number(parsed.overallScore);
-    } else if (parsed.criteria && Array.isArray(parsed.criteria)) {
+    if (parsed.criteria && Array.isArray(parsed.criteria)) {
+      // 使用權重重新計算總分
       totalScore = parsed.criteria.reduce((sum: number, item: any) => {
-        return sum + (Number(item.weightedScore) || 0);
+        const score = Number(item.score) || 0;
+        const maxScore = Number(item.maxScore) || 10;
+        const weight = Number(item.weight) || 0;
+        const weightedScore = (score / maxScore) * (weight / 100);
+        console.log(`   ${item.name}: ${score}/${maxScore} × ${weight}% = ${weightedScore.toFixed(2)}`);
+        return sum + weightedScore;
       }, 0);
+      // 轉換為 100 分制
+      totalScore = totalScore * 100;
+      console.log(`📊 重新計算的總分: ${totalScore.toFixed(1)}/100`);
+    } else if (parsed.overallScore) {
+      // 如果沒有 criteria 數據，才使用 AI 的 overallScore
+      totalScore = Number(parsed.overallScore);
+      console.log(`📊 使用 AI 的總分: ${totalScore}/100`);
     }
 
     // 轉換評分結果
@@ -410,7 +437,7 @@ ${criteriaList}
     return {
       projectTitle: parsed.projectTitle || '',
       projectDescription: '',
-      totalScore: Math.round(totalScore * 100) / 100,
+      totalScore: Math.round(totalScore * 10) / 10, // 保留一位小數（100分制）
       maxTotalScore: 100,
       results,
       overallFeedback: parsed.detailedAnalysis?.summary || parsed.overallFeedback || '整體評價',
@@ -570,7 +597,7 @@ ${criteriaList}
         totalScore = results.reduce((sum, result) => {
           const criteriaItem = criteria.find(c => c.id === result.criteriaId);
           const weight = criteriaItem ? criteriaItem.weight : 0;
-          const weightedScore = (result.score / result.maxScore) * weight;
+          const weightedScore = (result.score / result.maxScore) * (weight / 100);
           console.log(`   ${result.criteriaName}: ${result.score}/${result.maxScore} × ${weight}% = ${weightedScore.toFixed(2)}`);
           return sum + weightedScore;
         }, 0);
@@ -587,8 +614,8 @@ ${criteriaList}
       return {
         projectTitle: '',
         projectDescription: '',
-        totalScore: Math.round(totalScore * 100) / 100, // 四捨五入到小數點後兩位
-        maxTotalScore: Math.round(maxTotalScore * 100) / 100,
+        totalScore: Math.round(totalScore * 10) / 10, // 四捨五入到小數點後一位
+        maxTotalScore: Math.round(maxTotalScore * 10) / 10,
         results,
         overallFeedback: parsed.overallFeedback || '基於資料庫評分標準的整體評價'
       };
@@ -621,7 +648,7 @@ ${criteriaList}
       totalScore = results.reduce((sum, result) => {
         const criteriaItem = criteria.find(c => c.id === result.criteriaId);
         const weight = criteriaItem ? criteriaItem.weight : 0;
-        return sum + ((result.score / result.maxScore) * weight);
+        return sum + ((result.score / result.maxScore) * (weight / 100));
       }, 0);
     } else {
       const rawTotal = results.reduce((sum, result) => sum + result.score, 0);
@@ -632,8 +659,8 @@ ${criteriaList}
     return {
       projectTitle: '',
       projectDescription: '',
-      totalScore: Math.round(totalScore * 100) / 100,
-      maxTotalScore: Math.round(maxTotalScore * 100) / 100,
+      totalScore: Math.round(totalScore * 10) / 10, // 四捨五入到小數點後一位
+      maxTotalScore: Math.round(maxTotalScore * 10) / 10,
       results,
       overallFeedback: '由於技術問題，無法完成完整的 AI 分析。建議檢查文件格式或重新上傳。'
     };
diff --git a/uploads/projects/30/1758644704994_cm3863nuv.pptx b/uploads/projects/30/1758644704994_cm3863nuv.pptx
new file mode 100644
index 0000000..8b38ba6
Binary files /dev/null and b/uploads/projects/30/1758644704994_cm3863nuv.pptx differ