Using similarity theory as guidance,the paper designs the laboratory model test on foundation reinforcement by locating fly ash-lime pile and wheat-lime pile at both side of strip footing, and researches the destruction, foundation bearing capacity, p-s curve, in view of economic conditions at the rural area. The results show that the fly ash-lime pile and the wheat-lime pile can effectively improve the foundation bearing capacity, and reduce the amount of ground settlement; the yield point elongation, which appears in load-settlement curve of the wheat-lime pile, can be further improved foundation safety degree.