Abstract: In order to study the influence of arrangement of pile and conductive plastic drainage board on electroosmosis effect, the model test of electroosmotic reinforced pile was carried out. The variation of average electroosmosis drainage, current, effective potential, pile-soil interface resistance, settlement of soil around pile, shear strength of soil around pile before and after electroosmosis and bearing capacity of displacement pile were revealed. The analysis shows that electroosmotic effect is better under square arrangement of conductive plastic drainage plate, but the dislocation arrangement condition is more economical and convenient for construction, so the arrangement condition still needs to be selected according to the actual situation. In the condition of square arrangement, the average discharge is higher, and the bearing capacity of piles and the shear strength of soil around piles are also larger, so the effect of electroosmosis treatment under the condition of square piles is better. According to the theory of cavity expansion and two-dimensional electroosmotic consolidation, the theory of ultimate bearing capacity of electroosmotic reinforced pile is derived. Comparing the theoretical calculation value with the test results, it is found that the calculation error is between 3.1% and 5.6%.