Through the model experiment, the in-situ actual result and the theoretical solution of elasticity are compared each other; and it is pointed out that the theoretical solution of elasticity exaggerated the pile -pile, pile -soil, soil -soil interaction influence and created the predicted subsidence value to be big and overestimated the nonuniformity of pile head reactions (or nonuniformity of raft bottom foundation soil reactions). Finally, the solution way and method for revising the theoretical solution of elasticity ate pointed out.