Objective：Study the influence of the stop time in winter，times of plateau on the index in early days for plateau constructors meet；Method：Is it participate in plateau construction of２００２－２００４to choose， enter into the plateau again of２００３－２００５practise clothes finish to mate３２６materials“physical examination in front of the worker”，which is passed in Nanshankou Hospital in early days，divided into３groups according to the difference of year for the physical examination，examine by leaning towards relevant analytical methods； Result：（１）In the situation of day controlling about the stop time in winter，times of garrison in plateau and blood and oxygen saturation lever（SaO２），the systolic pressure（sBP）is presented and shouldered relevantly winter to control．Present positive correlation with the value of hemoglobin（Hb）；（２）It is stopped that in case of controlling and is garrisoned in the number of times of plateau in winter day and blood and oxygen saturation lever（SaO２）to present positive correlation．Present and shoulder with the hemoglobin（Hb）relevantly． Conclusion：In order to ensure the health of plateau constructors to the maximum extent，should try one’s best to reduce the number of times of returning to the plateau in possible cases．At the same time each one constructs for year and returns to the time that the hinterland concentrates rest should be on above９０days．