According to the characteristics of plain metal gate , this paper puts forward the hhu superelement technology for fem modeling of plain metal gate . as a result , the input of parameters with visual mode is realized and the efficiency and quality of the modeling of fem is enhanced 針對平面金屬閘門的結構特點,提出了適用于平面金屬閘門有限元建模的hhu超單元技術,實現了剖分參數的可視化方式輸入,大大提高了平面閘門有限元建模的效率和準確性。