diff --git a/backend/DramaLing.Api/Models/Entities/SentenceAnalysisCache.cs b/backend/DramaLing.Api/Models/Entities/SentenceAnalysisCache.cs
index ac88a71..2d6f569 100644
--- a/backend/DramaLing.Api/Models/Entities/SentenceAnalysisCache.cs
+++ b/backend/DramaLing.Api/Models/Entities/SentenceAnalysisCache.cs
@@ -27,7 +27,7 @@ public class SentenceAnalysisCache
 
     public string? HighValueWords { get; set; } // JSON 格式，高價值詞彙列表
 
-    public string? PhrasesDetected { get; set; } // JSON 格式，檢測到的片語
+    public string? IdiomsDetected { get; set; } // JSON 格式，檢測到的慣用語
 
     [Required]
     public DateTime CreatedAt { get; set; }