The length and spacing of pile foundation directly affect the safety and construction cost of the track beam on the soft soil foundation.How to obtain the length of the pile foundation that satisfies the control of the settlement of the track beam and the economical and reasonable pile foundation has become the main technical problem of this kind of project.In this paper,pile bottom is not entered the hard bearing layer,so the track beam stiffness and stiffness of pile foundation interaction is considered.We adopt Mindlin settlement calculation method to analyze the influence of uneven settlement of soft soil pile type track beams,and propose a feasible design method for settlement control of track beams on uneven soft soil foundations.