The Xiliao River Basin is located in the territory of Chifeng City and Tongliao City in Inner Mongolia,and it is one of the important areas of early civilization in China.This article mainly focuses on studying animal petroglyphs in the Xiliao River Basin.Animal petroglyph types include deer,tiger,horse,sheep,birds,etc.The animal petroglyphs in the Xiliao River Basin are divided into five regions,each with its own characteristics.Comparative analysis of the form and thematic function of animal petroglyphs in each region shows that animal petroglyphs in different regions have different characteristics.The chronology is determined using the method of comparative archaeology.Overall,the animal petroglyphs in various regions of the Xiliao River Basin reflect the living,production,and belief aspects of the people at that time,providing important data for studying ancient society.