diff --git a/backend/Directory.Build.props b/backend/Directory.Build.props
index dd2894b..bbd8e84 100644
--- a/backend/Directory.Build.props
+++ b/backend/Directory.Build.props
@@ -5,6 +5,8 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <DebugType>none</DebugType>
+    <DebugSymbols>false</DebugSymbols>
     <AnalysisLevel>latest-recommended</AnalysisLevel>
     <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
     <InvariantGlobalization>true</InvariantGlobalization>
diff --git a/ci/release-cross-platform.ps1 b/ci/release-cross-platform.ps1
index 1149511..f45f67c 100644
--- a/ci/release-cross-platform.ps1
+++ b/ci/release-cross-platform.ps1
@@ -61,6 +61,7 @@ try {
         -p:PublishAot=true `
         -p:StripSymbols=true `
         -p:DebugType=none `
+        -p:DebugSymbols=false `
         --artifacts-path $buildRoot `
         -o $output
     if ($LASTEXITCODE -ne 0) {
diff --git a/ci/release-linux.sh b/ci/release-linux.sh
index 1504cae..74c6fe1 100644
--- a/ci/release-linux.sh
+++ b/ci/release-linux.sh
@@ -33,8 +33,10 @@ mkdir -p "$output" "$build_root" "$container_context/app" "$container_context/da
 
 (cd "$root/backend" && dotnet publish src/Monitor.Backend \
   -m:3 -c Release --no-self-contained \
+  -p:DebugType=none -p:DebugSymbols=false \
   -p:UseAppHost=false -p:OpenApiGenerateDocuments=false \
   --artifacts-path "$build_root" -o "$output")
+find "$output" -type f -name '*.pdb' -delete
 cp -a "$output/." "$container_context/app/"
 : > "$container_context/data/.keep"
 
diff --git a/scripts/publish.sh b/scripts/publish.sh
index ab745e4..fe1fc70 100644
--- a/scripts/publish.sh
+++ b/scripts/publish.sh
@@ -17,7 +17,7 @@ case "$project" in
 esac
 
 out="backend/artifacts/publish/$project/$rid"
-args=(publish "$csproj" -c Release -r "$rid" -p:PublishAot=true -p:DebugType=none -o "/src/$out" --artifacts-path /artifacts -nologo -v q)
+args=(publish "$csproj" -c Release -r "$rid" -p:PublishAot=true -p:DebugType=none -p:DebugSymbols=false -o "/src/$out" --artifacts-path /artifacts -nologo -v q)
 
 case "$rid" in
   linux-musl-x64)
@@ -34,7 +34,7 @@ case "$rid" in
     ;;
   *)
     cd "$root/backend"  # global.json 在 backend/ 下
-    dotnet publish "${csproj#backend/}" -c Release -r "$rid" -p:PublishAot=true -o "$root/$out" -nologo -v q
+    dotnet publish "${csproj#backend/}" -c Release -r "$rid" -p:PublishAot=true -p:DebugType=none -p:DebugSymbols=false -o "$root/$out" -nologo -v q
     ;;
 esac