Abstract: LGM is a typical form of extreme dry and cold in environmental evolution. China is one of the most concentrated and continuous areas of human activity in the world. It is of great scientific significance to study the response and adaptation of Chinese human beings to LGM. Climate deterioration During the LGM period, all areas of China were drastically cooled and the cooling rate increased from south to north. The average temperature in the central and northern regions is 8~10°C below the current temperature. Precipitation is generally reduced, the average annual precipitation in the north only 30%~40%. Precipitation in the south of the Yangtze River is only 60%~80% of the modern precipitation. Due to the deterioration of the climate, resulting in decreased vegetation NPP and resource density also decreased. Human activities in northern China are rapidly weakening, and the number of sites is significantly reduced compared with MIS3 and PG periods. At the same time, hunting has developed a more frequent, more mobile behavior model. During the LGM period, China's natural belt moved south as a whole. At that time the sites were mainly distributed in the temperate grasslands of the north of China and south of the Loess Plateau, and the northeastern temperate forest-grassland. At the same time, natural bands, mammoth fauna and Siberian populations migrate southward, accompanied by the microlithic technology suitable for the grassland environment. The rapid spread of microlithic technology in northern China is an important manifestation of the adjustment and adaptation of LGM’s deteriorating environment in northern China. To adapt to the LGM period of China’s Yangtze River in the middle and lower reaches of the cold and humid environment and invented the pottery. This is the southern region in the LGM period to deepen the resources and expand the specific embodiment of resources. However, the spread of pottery in East Asia is closely related to the environmental events such as the extrapolation of the LGM coastline.

Key words: human activity, LGM, environmental evolution, microlith