diff --git a/panels/dock/taskmanager/CMakeLists.txt b/panels/dock/taskmanager/CMakeLists.txt
index 6cabad4ab..3c3d291a3 100644
--- a/panels/dock/taskmanager/CMakeLists.txt
+++ b/panels/dock/taskmanager/CMakeLists.txt
@@ -57,6 +57,8 @@ add_library(dock-taskmanager SHARED ${DBUS_INTERFACES}
     appitem.h
     rolecombinemodel.cpp
     rolecombinemodel.h
+    rolegroupmodel.cpp
+    rolegroupmodel.h
     itemmodel.cpp
     itemmodel.h
     desktopfileabstractparser.cpp
diff --git a/panels/dock/taskmanager/rolegroupmodel.cpp b/panels/dock/taskmanager/rolegroupmodel.cpp
new file mode 100644
index 000000000..5bbc390f1
--- /dev/null
+++ b/panels/dock/taskmanager/rolegroupmodel.cpp
@@ -0,0 +1,255 @@
+// SPDX-FileCopyrightText: 2025 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rolegroupmodel.h"
+
+#include <QList>
+
+RoleGroupModel::RoleGroupModel(QAbstractItemModel *sourceModel, int role, QObject *parent)
+    : QAbstractProxyModel(parent)
+    , m_roleForDeduplication(role)
+{
+    RoleGroupModel::setSourceModel(sourceModel);
+}
+
+void RoleGroupModel::setDeduplicationRole(const int &role)
+{
+    if (role != m_roleForDeduplication) {
+        m_roleForDeduplication = role;
+        rebuildTreeSource();
+    }
+}
+
+int RoleGroupModel::deduplicationRole() const
+{
+    return m_roleForDeduplication;
+}
+
+void RoleGroupModel::setSourceModel(QAbstractItemModel *model)
+{
+    if (sourceModel()) {
+        sourceModel()->disconnect(this);
+    }
+
+    QAbstractProxyModel::setSourceModel(model);
+
+    rebuildTreeSource();
+    if (sourceModel() == nullptr)
+        return;
+
+    connect(sourceModel(), &QAbstractItemModel::rowsInserted, this, [this](const QModelIndex &parent, int first, int last) {
+        adjustMap(first, (last - first) + 1);
+
+        for (int i = first; i <= last; i++) {
+            auto sourceIndex = sourceModel()->index(i, 0);
+            auto data = sourceIndex.data(m_roleForDeduplication).toString();
+            if (data.isEmpty()) {
+                continue;
+            }
+
+            auto list = m_map.value(data, nullptr);
+            if (nullptr == list) {
+                beginInsertRows(QModelIndex(), m_rowMap.size(), m_rowMap.size());
+                list = new QList<int>();
+                m_map.insert(data, list);
+                m_rowMap.append(list);
+                endInsertRows();
+            }
+            beginInsertRows(index(m_rowMap.indexOf(list), 0), list->size(), list->size());
+            list->append(i);
+            endInsertRows();
+        }
+    });
+
+    connect(sourceModel(), &QAbstractItemModel::rowsRemoved, this, [this](const QModelIndex &parent, int first, int last) {
+        for (int i = 0; i < m_rowMap.count(); ++i) {
+            auto sourceRows = m_rowMap.value(i);
+            for (int j = 0; j < sourceRows->size(); ++j) {
+                if (first <= sourceRows->value(j) && last >= sourceRows->value(j)) {
+                    beginRemoveRows(index(m_rowMap.indexOf(sourceRows), 0), j, j);
+                    sourceRows->removeAt(j);
+                    endRemoveRows();
+                    --j;
+                }
+            }
+            if (sourceRows->size() == 0) {
+                beginRemoveRows(QModelIndex(), m_rowMap.indexOf(sourceRows), m_rowMap.indexOf(sourceRows));
+                m_map.remove(m_map.key(sourceRows));
+                m_rowMap.removeOne(sourceRows);
+                delete sourceRows;
+                endRemoveRows();
+            }
+        }
+        adjustMap(first, -((last - first) + 1));
+    });
+
+    connect(sourceModel(), &QAbstractItemModel::dataChanged, this, [this](const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList<int> &roles) {
+        // TODO: if roles contains m_roleForDeduplication, need update from topLeft 2 bottomRight or just send dataChanged
+        if (roles.contains(m_roleForDeduplication)) {
+            rebuildTreeSource();
+            return;
+        }
+
+        for (int i = topLeft.row(); i <= bottomRight.row(); ++i) {
+            auto data = sourceModel()->index(i, 0).data(m_roleForDeduplication).toString();
+            auto list = m_map.value(data, nullptr);
+            if (list == nullptr)
+                continue;
+
+            auto index = createIndex(list->indexOf(i), 0, m_rowMap.indexOf(list));
+            Q_EMIT dataChanged(index, index, roles);
+        }
+    });
+
+    connect(sourceModel(), &QAbstractItemModel::modelReset, this, [this]() {
+        rebuildTreeSource();
+    });
+}
+
+int RoleGroupModel::rowCount(const QModelIndex &parent) const
+{
+    if (parent.isValid()) {
+        auto list = m_rowMap.value(parent.row(), nullptr);
+        return nullptr == list ? 0 : list->size();
+    }
+
+    return m_rowMap.size();
+}
+
+int RoleGroupModel::columnCount(const QModelIndex &parent) const
+{
+    if (sourceModel()) {
+        return sourceModel()->columnCount(parent);
+    }
+    return 0;
+}
+
+QHash<int, QByteArray> RoleGroupModel::roleNames() const
+{
+    if (sourceModel()) {
+        return sourceModel()->roleNames();
+    }
+    return QAbstractProxyModel::roleNames();
+}
+
+QVariant RoleGroupModel::data(const QModelIndex &index, int role) const
+{
+    auto parentPos = static_cast<int>(index.internalId());
+    auto list = m_rowMap.value(index.row(), nullptr);
+    if (parentPos == -1) {
+        if (nullptr == list || list->size() == 0) {
+            return QVariant();
+        }
+        return sourceModel()->index(list->first(), 0).data(role);
+    }
+
+    list = m_rowMap.value(parentPos);
+    if (list == nullptr) {
+        return QVariant();
+    }
+
+    return sourceModel()->index(list->value(index.row()), 0).data(role);
+}
+
+QModelIndex RoleGroupModel::index(int row, int column, const QModelIndex &parent) const
+{
+    auto list = m_map.value(parent.data(m_roleForDeduplication).toString(), nullptr);
+    if (parent.isValid() && nullptr != list) {
+        return createIndex(row, column, m_rowMap.indexOf(list));
+    }
+
+    return createIndex(row, column, -1);
+}
+
+QModelIndex RoleGroupModel::parent(const QModelIndex &child) const
+{
+    auto pos = static_cast<int>(child.internalId());
+    if (pos == -1)
+        return QModelIndex();
+
+    return createIndex(pos, 0);
+}
+
+QModelIndex RoleGroupModel::mapToSource(const QModelIndex &proxyIndex) const
+{
+    auto parentIndex = proxyIndex.parent();
+    QList<int> *list = nullptr;
+
+    if (parentIndex.isValid()) {
+        list = m_rowMap.value(parentIndex.row());
+    } else {
+        list = m_map.value(proxyIndex.data(m_roleForDeduplication).toString());
+    }
+
+    if (nullptr == list)
+        return QModelIndex();
+
+    if (parentIndex.isValid()) {
+        return sourceModel()->index(list->value(proxyIndex.row()), 0);
+    }
+
+    return sourceModel()->index(list->value(0), 0);
+}
+
+QModelIndex RoleGroupModel::mapFromSource(const QModelIndex &sourceIndex) const
+{
+    auto data = sourceIndex.data(m_roleForDeduplication).toString();
+    if (data.isEmpty()) {
+        return QModelIndex();
+    }
+
+    auto list = m_map.value(data, nullptr);
+    if (nullptr == list || 0 == list->size()) {
+        return {};
+    }
+
+    if (sourceIndex.row() == list->first()) {
+        return createIndex(m_rowMap.indexOf(list), 0, -1);
+    }
+
+    auto pos = list->indexOf(sourceIndex.row());
+    return createIndex(pos, 0, m_rowMap.indexOf(list));
+}
+
+void RoleGroupModel::rebuildTreeSource()
+{
+    beginResetModel();
+    qDeleteAll(m_rowMap);
+    m_map.clear();
+    m_rowMap.clear();
+
+    if (sourceModel() == nullptr) {
+        endResetModel();
+        return;
+    }
+
+    for (int i = 0; i < sourceModel()->rowCount(); i++) {
+        auto index = sourceModel()->index(i, 0);
+        auto data = index.data(m_roleForDeduplication).toString();
+        if (data.isEmpty()) {
+            continue;
+        }
+
+        auto list = m_map.value(data, nullptr);
+        if (nullptr == list) {
+            list = new QList<int>();
+            m_map.insert(data, list);
+            m_rowMap.append(list);
+        }
+        list->append(i);
+    }
+    endResetModel();
+}
+
+void RoleGroupModel::adjustMap(int base, int offset)
+{
+    for (int i = 0; i < m_rowMap.count(); ++i) {
+        auto sourceRows = m_rowMap.value(i);
+        for (int j = 0; j < sourceRows->size(); ++j) {
+            if (sourceRows->value(j) < base)
+                continue;
+            (*sourceRows)[j] += offset;
+        }
+    }
+}
diff --git a/panels/dock/taskmanager/rolegroupmodel.h b/panels/dock/taskmanager/rolegroupmodel.h
new file mode 100644
index 000000000..a1cca23eb
--- /dev/null
+++ b/panels/dock/taskmanager/rolegroupmodel.h
@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: 2025 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QAbstractProxyModel>
+
+class RoleGroupModel : public QAbstractProxyModel
+{
+    Q_OBJECT
+
+public:
+    explicit RoleGroupModel(QAbstractItemModel *sourceModel, int role, QObject *parent = nullptr);
+    void setSourceModel(QAbstractItemModel *sourceModel) override;
+
+    void setDeduplicationRole(const int &role);
+    int deduplicationRole() const;
+
+    QHash<int, QByteArray> roleNames() const override;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+
+    bool hasIndex(int row, int column, const QModelIndex &parent = QModelIndex()) const;
+    Q_INVOKABLE virtual QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
+    Q_INVOKABLE virtual QModelIndex parent(const QModelIndex &child) const override;
+
+    QModelIndex mapToSource(const QModelIndex &proxyIndex) const override;
+    QModelIndex mapFromSource(const QModelIndex &sourceIndex) const override;
+
+Q_SIGNALS:
+    void deduplicationRoleChanged(int role);
+
+private:
+    void rebuildTreeSource();
+    void adjustMap(int base, int offset);
+
+private:
+    int m_roleForDeduplication;
+
+    // for order
+    QList<QList<int> *> m_rowMap;
+
+    // data 2 source row
+    QHash<QString, QList<int> *> m_map;
+};
diff --git a/tests/panels/dock/taskmanager/CMakeLists.txt b/tests/panels/dock/taskmanager/CMakeLists.txt
index b66a395fc..73f60a3e1 100644
--- a/tests/panels/dock/taskmanager/CMakeLists.txt
+++ b/tests/panels/dock/taskmanager/CMakeLists.txt
@@ -25,3 +25,21 @@ target_include_directories(rolecombinemodel_tests PRIVATE
 )
 
 add_test(NAME rolecombinemodel COMMAND rolecombinemodel_tests)
+
+add_executable(rolegroupmodel_tests
+    rolegroupmodeltests.cpp
+)
+
+target_link_libraries(rolegroupmodel_tests
+    GTest::GTest
+    GTest::Main
+    Qt${QT_VERSION_MAJOR}::Core
+    Qt${QT_VERSION_MAJOR}::Test
+    dock-taskmanager
+)
+target_include_directories(rolegroupmodel_tests PRIVATE
+    ${CMAKE_SOURCE_DIR}/panels/dock/taskmanager/
+)
+
+add_test(NAME rolegroupmodel COMMAND rolegroupmodel_tests)
+
diff --git a/tests/panels/dock/taskmanager/rolegroupmodeltests.cpp b/tests/panels/dock/taskmanager/rolegroupmodeltests.cpp
new file mode 100644
index 000000000..5719b16f3
--- /dev/null
+++ b/tests/panels/dock/taskmanager/rolegroupmodeltests.cpp
@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: 2025 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rolegroupmodel.h"
+#include <QVariant>
+
+#include <gtest/gtest.h>
+
+#include <QSignalSpy>
+#include <QStandardItemModel>
+#include <qhash.h>
+
+#include "rolegroupmodel.h"
+
+TEST(RoleGroupModel, RowCountTest)
+{
+    QStandardItemModel model;
+    QStandardItem *item1 = new QStandardItem;
+    QStandardItem *item2 = new QStandardItem;
+    QStandardItem *item3 = new QStandardItem;
+    QStandardItem *item4 = new QStandardItem;
+    QStandardItem *item5 = new QStandardItem;
+
+    auto role = Qt::UserRole + 1;
+
+    RoleGroupModel groupModel(&model, role);
+    model.setItemRoleNames({{role, "data"}});
+
+    item1->setData(QString("data"), role);
+    model.appendRow(item1);
+
+    item2->setData(QString("data"), role);
+    model.appendRow(item2);
+
+    model.appendRow(item3);
+    model.appendRow(item4);
+    model.appendRow(item5);
+    QSignalSpy spy(&model, &QAbstractItemModel::rowsRemoved);
+    QSignalSpy spys(&model, &QAbstractItemModel::rowsInserted);
+
+    item3->setData(QString("data3"), role);
+    item4->setData(QString("data4"), role);
+    item5->setData(QString("data4"), role);
+
+    auto index1 = groupModel.index(0, 0);
+    auto index11 = groupModel.index(0, 0, index1);
+    auto index2 = groupModel.index(1, 0, index1);
+    auto index3 = groupModel.index(1, 0);
+    auto index4 = groupModel.index(2, 0);
+
+    EXPECT_EQ(groupModel.rowCount(), 3);
+    EXPECT_EQ(groupModel.rowCount(index1), 2);
+    EXPECT_EQ(groupModel.rowCount(index3), 1);
+    EXPECT_EQ(groupModel.rowCount(index4), 2);
+
+    EXPECT_EQ(index11.data(role), index1.data(role));
+    EXPECT_EQ(index1.data(role), "data");
+    EXPECT_EQ(index2.data(role), "data");
+    EXPECT_EQ(index3.data(role), "data3");
+    EXPECT_EQ(index4.data(role), "data4");
+
+    // 移除了item3
+    model.removeRows(2, 1);
+    EXPECT_EQ(groupModel.rowCount(), 2);
+
+    // 移除了item4
+    model.removeRows(2, 1);
+    EXPECT_EQ(groupModel.rowCount(), 2);
+
+    index4 = groupModel.index(1, 0);
+    EXPECT_EQ(groupModel.rowCount(index1), 2);
+    // item5 的内容为data4
+    EXPECT_EQ(groupModel.rowCount(index4), 1);
+}