我国沙漠众多 ,90 %分布在乌鞘岭和贺兰山以西 ,约占西北五省区的 1/ 3。沙漠环境的主要特点是 :气候酷热 ,温差大 ;降水量少 ,极端干燥 ;水资源少 ,水质较差 ,饮水问题突出 ;植被稀疏 ,人口稀少。本文着重探讨沙漠环境对人体生理机能的影响 ,并就有关防护措施进行了概述。1　 Many deserts in our country, 90% distributed in Wushaoling Helan Mountain west, accounting for about one-third of the five provinces and regions in Northwest China. The main features of the desert environment are: hot climate, large temperature difference; less precipitation, extremely dry; less water resources, poor water quality, drinking water problems; sparse vegetation, sparsely populated. This article focuses on the impact of desert environment on human physiological functions, and gives an overview of the protective measures. 1