According to the research on the second-line lock engineering of Taizhou irrigation channel Gaogang hydraulic schemes and based on the ABAQUS platform,we establish the whole finite element model of sheet-pile structures,which can be employed to predict the deformation behavior of anchor pile and underground retaining wall,and the internal force state of the bar in different stages of the construction period. Moreover,based on the model,we probe into the influence of the bar arrangement for the underground retaining wall’s sheet-pile structure. soil excavation in the lock chamber,and soil filling scheme behind the wall on the sheet-pile structure system。 The research result reveals that excavation exerts the greatest influence on the internal force and deformation of the sheet-pile wall;Both the bar number and bar elevation shall be reasonable to avoid greater tensile stress on the underground retaining wall;The construction mode of excavating the chamber soil first and filling behind the sheet-pile wall later is more favorable for the overall stress and deformation of the anchor system.