1.首先给ComboBox设置view:2.给comboBox设置样式 1.首先给ComboBox设置view:QComboBox* combox = new QComboBox(this);combox->comboBox->setView(new QListView()); 2.给comboBox设置样式combox->comboBox->setStyleSheet("QComboBox QAbstractItemView::item {min-height: 29px;}");