The work aims to systematically conduct ergonomic analysis based on the research on passenger behaviors of sleepers, so as to provide effective guidance for the layout design of train sleepers. First, the mapping relationship between passenger behaviors and the layout of train sleeper facilities was analyzed, and the behaviors of passengers in sleepers were studied through task analysis. Then the SAPAD framework was introduced to establish the meaning of each behavior level, and the existing sleeper layout problems were summarized in relation to extract. Finally, layout iterative design and verification analysis were carried out. Four standard behaviors of passengers in the sleeper were studied. A sleeper layout model guided by behavior analysis was designed, and the feasibility of the innovative design function was verified with Jack software. In sleeper design, the ergonomic analysis of passenger behaviors is conducive to discovering the unreasonable design content of users during use, and obtaining a new design method based on ergonomics to improve user riding experience.