diff --git a/popcorn/Assets/MyGame/Scenes/recipe/Scripts/RecipeDetailView.cs b/popcorn/Assets/MyGame/Scenes/recipe/Scripts/RecipeDetailView.cs
index 88b030ba..34872f4c 100644
--- a/popcorn/Assets/MyGame/Scenes/recipe/Scripts/RecipeDetailView.cs
+++ b/popcorn/Assets/MyGame/Scenes/recipe/Scripts/RecipeDetailView.cs
@@ -258,6 +258,10 @@ public class RecipeDetailView : MonoBehaviour
     {
         var cityGameData = GameDataManager.GetCityGameData(cityId);
         cityGameData.CornSeed -= productData.MaterialList[0].amount;
+        if (cityGameData.CornSeed<0)
+        {
+            cityGameData.CornSeed = 0;
+        }
         if (cityGameData.Material.FirstOrDefault(x => x.Id == productData.MaterialList[1].id) is MaterialData material1)
         {
             material1.Amount -= productData.MaterialList[1].amount;