The balance of salt in the groundw after and salt flux and rate of salt accumulation in vadose and forecasted soil salinization of different landforms in Taoer river basin of Jilin province is calculated with soil salinization forecast model. The generalt rend of soil salinizaton will be aggravated in the river basin, but there is much difference in diverse landforms. Soil salinization become more aggravating from the upper reach to the lower of the river basin. The traditional method of forecasting soil salinization with developing rate is not precise.