Low pile foundation is spacious used to process irrigation structure. In Vietnam it is effectively used to process irrigation structure in the north plains. However, when calculating load of the foundation works, it was mainly calculated to transmit to pile omitted load transmit to surrounding soil, in fact the load was transmitted to surrounding soil. So the lager number of piles were used to process foundation, it caused waste of piles and economics. Therefor calculating pile foundation, as calculated the interaction interaction between Soil, piles and irrigation structure will reduce the number of piles in the foundation, and when the irrigation structures were deformation tested by software and measured in actual condition, the results showed that the irrigation structures were guaranteed to work as the normal design criteria. Now in Vietnam some of pump stations and aqueducts are applied the interaction between Soil, piles and irrigation structure to process foundation.