The impacts of indoor thermal environment on body physiology have been carried on for four years (2003-2007) in laboratory in Chongqing, a typical city located in hot-summer and cold-winter region in China. Experimental objectives used are healthy university students. The range of indoor air temperature in summer is 25 C - 37.5 C.The objectives physiological changes (Motor nerve Conduction Velocity, Sensory nerve Conduction Velocity, Skin Temperature etc.) under different temperatures and ventilations have been tested.