Abstract: Objective To analyze the current status of occupational fatigue and its influencing factors among the construction population of a railway in the plateau,and provide reference for the formulation of intervention measures. Methods From July to August 2022,a convenient sampling method was used to conduct a field questionnaire survey on a railway construction population in a plateau area. The fatigue scale-14（FS-14） was employed to assess the current state of occupational fatigue,and t-tests and ANOVA were used to compare the differences in occupational fatigue among different demographic groups. Multiple linear regression analysis was used to identify the factors influencing fatigue. Results The total score of occupational fatigue was （3.93±3.48）points,with 77 cases of occupational fatigue,accounting for 22.7%. Multiple linear regression analysis revealed that education level,plateau life experience,plateau adaptation,plateau life troubles,self-rated physical health,and subjective sleep quality were significant factors affecting occupational fatigue in the plateau railway construction population（all P<0.01）. For every unit increased in self-rated physical health deterioration,the occupational fatigue score was expected to increase by 1.164 points. For every unit increased in subjective sleep quality,the occupational fatigue score was expected to decrease by 1.141 points. For every unit increased in plateau life troubles,the occupational fatigue score was expected to decrease by 0.725 points. For every unit increased in plateau life experience,the occupational fatigue score was expected to increase by 0.611 points. And for every level increased in education level,the occupational fatigue score was expected to increase by 0.407 points. Conclusion The state of occupational fatigue among the railway construction population in the plateau area should not be overlooked,and there is an urgent need for society to pay attention to the occupational health of railway construction workers,to establish and improve the occupational health security system in plateau areas,effectively reduce occupational fatigue and other health risk factors,and ensure the occupational life quality of the railway construction population in the plateau.

Key words: Plateau, Railway construction population, Occupational fatigue, Influencing factor