A complete glacier system is developed around Huayan Temple in Laoshan Mountain. It is composed of triangular ridge chain, ice bucket, blade ridge, U-shaped valley, glacier boulders, moraine hills, glacier ridge and groove sequence. Giant glacier boulders are very common in this area, and the weight can reach thousands of tons. The moraine hills are 400m long and altitude difference can reach 25 m. The moraine ridge and groove sequence consists of two sets of moraine ridges. The ridges and grooves are nested at intervals, and the shape remains intact. Moraine is a mixture of boulder, sediment, clay and other materials. It does not show bedding and has general characteristics of moraine accumulation. The existence of giant glacier boulders and glacial hills shows that the ancient glaciers in Laoshan Mountain are large in scale. The moraine coast of Laoshan Mountain is the only geological relic in China, which has important scientific value. The accumulated ages of moraine ridges are (44±3)ka, (68±5)ka and>133 ka respectively. Combining with previous photoluminescence ages of (141.3±14)ka and (197.0±23)ka in this area, they systematically correspond to the MIS3b cold period of the late Pleistocene (Huayan Glaciation), Dongshan Glaciation and Lushan Glaciation of the Middle Pleistocene. The discovery and dating study of moraine ridge and trough sequence in Huayan Temple in Laoshan Mountain has further confirmed the accuracy and reliability of Mr. LI Siguang's assertion that there are Quaternary glaciers in the middle and low mountainous areas in eastern China 100 years ago.