diff --git a/server/MiAssessment/src/MiAssessment.Api/Dockerfile b/server/MiAssessment/src/MiAssessment.Api/Dockerfile
index be9777a..79647ee 100644
--- a/server/MiAssessment/src/MiAssessment.Api/Dockerfile
+++ b/server/MiAssessment/src/MiAssessment.Api/Dockerfile
@@ -14,5 +14,7 @@ RUN dotnet publish "src/MiAssessment.Api/MiAssessment.Api.csproj" -c Release -o
 
 FROM base AS final
 WORKDIR /app
+# 安装字体（页码渲染需要）
+RUN apt-get update && apt-get install -y --no-install-recommends fonts-dejavu-core && rm -rf /var/lib/apt/lists/*
 COPY --from=build /app/publish .
 ENTRYPOINT ["dotnet", "MiAssessment.Api.dll"]
diff --git a/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs b/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
index 1c75e03..0fda822 100644
--- a/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
+++ b/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
@@ -410,7 +410,7 @@ public class PdfGenerationService : IPdfGenerationService
     {
         using var document = new PdfDocument();
         var totalPages = images.Count;
-        var font = new XFont("Arial", 10, XFontStyle.Regular);
+        var font = new XFont("DejaVu Sans", 10, XFontStyle.Regular);
         var brush = new XSolidBrush(XColor.FromArgb(153, 153, 153)); // #999999
 
         for (var i = 0; i < totalPages; i++)