Dynamic change of Geladandong glaciers in area of headwaters of the Yangtze River in the hinterland of Qinghai - Tibetan Plateau were analyzed by using the 1992,2002,2008 Landsat satellite TM image and 1:100,000 topographic map and the method of man - machine visual conversation discriminated glaciers area manually. It was found that the total area of glaciers showed a distinctly decreasing trend since 1992. Glacier area was 931. 59km~2,927. 66km~2,and 915. 13km~2 in 1992,2002 and 2008 respectively. Reduced area was about1. 77% from 1992 to 2008 and about 1. 35% during 2002 ~ 2008 which was approximately 80% area that decreased from 1969 to 2000. It indicated the decrease rate of glacier area was significant greater than previous period in the hinterland of Qinghai - Tibetan Plateau. Furthermore,the results showed a greater melting pace in smaller glacier area than larger area. The pattern of some glaciers variation can be summarized as follows: " Withdrawal - short - term advance - retreat". The glacier variation respond to temperature and precipitation showed a strong corresponding in this area,it is implied that climate warming dominated a quickly decreases of glacier area since mid - 1990s.