With the mam contributors to high filling settlement determined ,a calculating model is set up according to the characteristics of high filling construction. On the principle of Layers - summation , a calculating method of high filling settlement is presented in consideration of construction mode and time. And an analysis of high filling settlement stabilization is made in Mianyang Airfield. The calculating results are in agreement with the measuring results ,which proves the method applicable for the calcalation of the total settlement course of high filling. This paper also discusses the steps of shortening the high filling settlement stabilization time.