Abstract: In the past 40 years,the author has further studied the age,living environment and culture of the Yuanmou Man.The study of Yuanmou Man's age has been carried out by:(1) the paleomagnetostratigraphic method,fission-track dating(FTD),electron spin resonance(ESR) and amino acid analysis,(2) the Yuanmou fauna,(3) the geomorphology in the Yuanmou area,(4) neotectonic movement,(5) the Quaternary stratigraphy of the Yuanmou basin,and(6) the teeth and tibia of the Yuanmou Man.The study at last comes to the conclusion that Yuanmou Man's age is early Pleistocene,~170 MaB.P..