Abstract: As different methods diverse in providing information and forecast precision,the combined forecasting model is employed.Combination forecasting model based on drift is proposed on basis of the study on drift and complementarity of different single forecasting models.A new thought of combination forecasting model is given.Finally some practical examples are given to show that combination fo recasting model based on drift can improve for ecasting precision and is effective in practice.

Key words: combination, forecasting, drift, complementarity, compatibility