Abstract: The Quaternary geological survey is very important for solving ecological and environmental problems with social development.Therefore, "What to do" and "How to do" become the key issues for the geological workers during the Quaternary geological mapping.On the basis of the Quaternary geological survey results in the Daqing Mountain of Inner Mongolia, the distribution characteristics, stages and main factors of alluvial-pluvial fans were clarified, and the mapping method was reviewed to provide some references for the future Quaternary survey.According to the practice of Quaternary mapping in Daqing Mountain of Inner Mongolia, the following four steps are summarized.Firstly, according to the particularity of geology and geomorphology, the main Quaternary geological and environmental problems in the region should be preliminarily sorted out, and the main sedimentary facies model should be selected to divide sedimentary facies.Secondly, the designed geological map is to be compiled based on the results of previous data and remote sensing interpretation, while field investigation and verification are to be carried out by outcrops, trenchs and drill holes.Then, ages of the mapping units and the different alluvial-pluvial fans are further to be determined by luminescence dating and radiocarbon dating.Finally, the combination of 'age + genesis + sedimentary face' and different lithologic patterns could be used to enhance the display of stratigraphy and enrich the content and form of the map.