Abstract: Based on the study of spore-pollen assemblages from PM03 profile in Longquan village of Longtou Town, Baoqing area, supported by chronological dating data, four pollen zones have been identified since the late Late Pleistocene. Pollen Zone Ⅰ(63.35-45.51 ka) is characterized by a savanna landscape, indicating a cool and dry climate.Pollen Zone Ⅱ(45.51-37.28 ka) consists of coniferous forests dominated by Pinus and Picea, suggesting a colder and somewhat more humid climate compared to the previous stage. Pollen Zone Ⅲ(37.28-23.56 ka) features a coniferous forest with a grassland landscape where herbs increased again, reflecting a cold and dry climate. Pollen Zone Ⅳ(23.56 ka to present) is marked by a sharp increase in Picea and a forest meadow landscape, with a climate that gradually transitioned to cold and wet. The climatic evolution in this area follows a sequence of cool-dry, cold-humid, cold-dry, and cold-wet, exhibiting an alternating pattern of cold-wet to warm-dry conditions.