我也遇到過這種情況，但是自己實現headData比較復雜，我就用了最初級的方法解決，就比如你這個情況，就是創建一個最根本的Qtablewidget，它的表頭為“過球”、“主管泄漏”、“全車泄露”，也就是個3列的表格，然后在每一列的第一行中添加子表格
QTableWidget *rootWidget = new QTableWidget(this);
rootWidget->setColumnCount(3);
rootWidget->setRowCount(1);
rootWidget->horizontalHeader()->setStretchLastSection(true);
rootWidget->setHorizontalHeaderLabels(QStringList() << QString::fromLocal8Bit("過球")
<< QString::fromLocal8Bit("主管泄漏") << QString::fromLocal8Bit("全車泄漏"));
QTableWidget *widget1 = new QTableWidget;
widget1->setColumnCount(2);
widget1->setRowCount(1);
widget1->horizontalHeader()->setStretchLastSection(true);
widget1->verticalHeader()->setVisible(false);
widget1->setHorizontalHeaderLabels(QStringList() << QString::fromLocal8Bit("結果")
<< QString::fromLocal8Bit("球編號"));
QTableWidget *widget2 = new QTableWidget;
widget2->setColumnCount(2);
widget2->setRowCount(1);
widget2->horizontalHeader()->setStretchLastSection(true);
widget2->verticalHeader()->setVisible(false);
widget2->setHorizontalHeaderLabels(QStringList() << QString::fromLocal8Bit("結果")
<< QString::fromLocal8Bit("漏泄量"));
QTableWidget *widget3 = new QTableWidget;
widget3->setColumnCount(2);
widget3->setRowCount(1);
widget3->horizontalHeader()->setStretchLastSection(true);
widget3->verticalHeader()->setVisible(false);
widget3->setHorizontalHeaderLabels(QStringList() << QString::fromLocal8Bit("結果")
<< QString::fromLocal8Bit("漏泄量"));
rootWidget->setCellWidget(0,0,widget1);
rootWidget->setCellWidget(0,1,widget2);
rootWidget->setCellWidget(0,2,widget3);