The underground water system of the Tong Liao area is identified and analyzed using the internal and outside information of the underground water system.

The paper is accorded to the actuality, characteristics and problems of popularization for agricultural mechanization techniques in Tongliao for national area and putted forward improving suggestions.

Though full materials and many field experiments in study area, surface material compositions, moisture state and vegetation condition are analyzed comprehensively.

The coefficients of rainfall infiltration in different time are worked out by using dynamic methods, area water balance method and mathematical methods.

Such as the sediment structure characteristic of paled geography and formation the spatial structure of formation, the spatial variation of sediment size.