diff --git a/bin/dde-system-daemon/bluetooth.go b/bin/dde-system-daemon/bluetooth.go
deleted file mode 100644
index 1fa84f77b..000000000
--- a/bin/dde-system-daemon/bluetooth.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
-//
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-package main
-
-import (
-	"fmt"
-	"path/filepath"
-
-	dbus "github.com/godbus/dbus/v5"
-	"github.com/linuxdeepin/go-lib/dbusutil"
-	"github.com/linuxdeepin/go-lib/keyfile"
-)
-
-const (
-	bluetoothPrefixDir = "/var/lib/bluetooth"
-
-	kfSectionGeneral  = "General"
-	kfKeyTechnologies = "SupportedTechnologies"
-)
-
-func (*Daemon) BluetoothGetDeviceTechnologies(adapter, device string) (technologies []string, busErr *dbus.Error) {
-	var filename = filepath.Join(bluetoothPrefixDir, adapter, device, "info")
-	if !filepath.HasPrefix(filename, bluetoothPrefixDir) {
-		return nil, dbusutil.ToError(fmt.Errorf("invaild adapter: [%s] device: [%s]", adapter, device))
-	}
-	technologies, err := doBluetoothGetDeviceTechnologies(filename)
-	if err != nil {
-		return nil, dbusutil.ToError(err)
-	}
-	return technologies, nil
-}
-
-func doBluetoothGetDeviceTechnologies(filename string) ([]string, error) {
-	var kf = keyfile.NewKeyFile()
-	err := kf.LoadFromFile(filename)
-	if err != nil {
-		return nil, fmt.Errorf("can't parse file: %s", filename)
-	}
-	return kf.GetStringList(kfSectionGeneral, kfKeyTechnologies)
-}
diff --git a/bin/dde-system-daemon/bluetooth_test.go b/bin/dde-system-daemon/bluetooth_test.go
deleted file mode 100644
index b2fce07d0..000000000
--- a/bin/dde-system-daemon/bluetooth_test.go
+++ /dev/null
@@ -1,52 +0,0 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
-//
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-package main
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func Test_doBluetoothGetDeviceTechnologies(t *testing.T) {
-	type args struct {
-		filename string
-	}
-	tests := []struct {
-		name    string
-		args    args
-		want    []string
-		wantErr bool
-	}{
-		{
-			name: "doBluetoothGetDeviceTechnologies",
-			args: args{
-				filename: "./testdata/doBluetoothGetDeviceTechnologies/info1",
-			},
-			want:    []string{"abc", "ccc"},
-			wantErr: false,
-		},
-		{
-			name: "doBluetoothGetDeviceTechnologies not exists",
-			args: args{
-				filename: "./testdata/nonono",
-			},
-			want:    []string{},
-			wantErr: true,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got, err := doBluetoothGetDeviceTechnologies(tt.args.filename)
-			if tt.wantErr {
-				assert.NotNil(t, err)
-				return
-			}
-
-			assert.Nil(t, err)
-			assert.ElementsMatch(t, tt.want, got)
-		})
-	}
-}
diff --git a/bin/dde-system-daemon/exported_methods_auto.go b/bin/dde-system-daemon/exported_methods_auto.go
index 6b2d9ee38..624b7dcec 100644
--- a/bin/dde-system-daemon/exported_methods_auto.go
+++ b/bin/dde-system-daemon/exported_methods_auto.go
@@ -8,12 +8,6 @@ import (
 
 func (v *Daemon) GetExportedMethods() dbusutil.ExportedMethods {
 	return dbusutil.ExportedMethods{
-		{
-			Name:    "BluetoothGetDeviceTechnologies",
-			Fn:      v.BluetoothGetDeviceTechnologies,
-			InArgs:  []string{"adapter", "device"},
-			OutArgs: []string{"technologies"},
-		},
 		{
 			Name:   "ClearTty",
 			Fn:     v.ClearTty,
diff --git a/bin/dde-system-daemon/testdata/doBluetoothGetDeviceTechnologies/info1 b/bin/dde-system-daemon/testdata/doBluetoothGetDeviceTechnologies/info1
deleted file mode 100644
index ea3ff982d..000000000
--- a/bin/dde-system-daemon/testdata/doBluetoothGetDeviceTechnologies/info1
+++ /dev/null
@@ -1,2 +0,0 @@
-[General]
-SupportedTechnologies=abc;ccc
diff --git a/bluetooth1/bluetooth_ifc.go b/bluetooth1/bluetooth_ifc.go
index b0c17cdb9..0e18e31fd 100644
--- a/bluetooth1/bluetooth_ifc.go
+++ b/bluetooth1/bluetooth_ifc.go
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -291,6 +291,8 @@ func (b *Bluetooth) FeedPasskey(device dbus.ObjectPath, accept bool, passkey uin
 	return nil
 }
 
+// DebugInfo is retained for D-Bus compatibility. The system service returns
+// an empty snapshot so this proxy cannot expose adapter or device details.
 func (b *Bluetooth) DebugInfo() (info string, busErr *dbus.Error) {
 	logger.Info("dbus call DebugInfo")
 
diff --git a/system/bluetooth1/bluetooth_ifc.go b/system/bluetooth1/bluetooth_ifc.go
index 20ed831a8..f3768e777 100644
--- a/system/bluetooth1/bluetooth_ifc.go
+++ b/system/bluetooth1/bluetooth_ifc.go
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -373,9 +373,11 @@ func (b *SysBluetooth) UnregisterAgent(sender dbus.Sender, agentPath dbus.Object
 	return nil
 }
 
+// DebugInfo is retained for D-Bus compatibility but no longer exposes
+// adapter or device details.
 func (b *SysBluetooth) DebugInfo() (info string, busErr *dbus.Error) {
-	info = fmt.Sprintf("adapters: %s\ndevices: %s", marshalJSON(b.adapters), marshalJSON(b.devices))
-	return info, nil
+	logger.Debug("dbus call DebugInfo")
+	return "", nil
 }
 
 // ClearUnpairedDevice will remove all device in unpaired list
diff --git a/system/bluetooth1/bluetooth_ifc_test.go b/system/bluetooth1/bluetooth_ifc_test.go
new file mode 100644
index 000000000..bf9d4daae
--- /dev/null
+++ b/system/bluetooth1/bluetooth_ifc_test.go
@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package bluetooth
+
+import "testing"
+
+func TestDebugInfoDoesNotExposeBluetoothDetails(t *testing.T) {
+	b := &SysBluetooth{}
+
+	info, err := b.DebugInfo()
+	if err != nil {
+		t.Fatalf("DebugInfo returned an unexpected error: %v", err)
+	}
+	if want := ""; info != want {
+		t.Fatalf("DebugInfo returned %q, want %q", info, want)
+	}
+}