Abstract: Archean basement rocks are well preserved in the Lushan area. In this study, zircon SHRIMP U-Pb dating results suggest that two samples, collected from the Weizhuang gneiss in Lushan, record magmatic age of 2867±5 Ma and 2768±5 Ma, respectively. They underwent metamorphism at 2775±6 Ma and 2775±56 Ma, respectively. Together with data available, the protoliths of the Weizhuang Gneiss formed at two stages, i.e., 2867-2928 Ma and 2765-2768 Ma, while protoliths of the Yushuzhuang Gneiss and amphibolite formed at three stages (2829-2897 Ma, 2752-2778 Ma and 2723 Ma versus 2838-2845 Ma, 2747-2794 Ma and 2730 Ma). Although the three types of rocks are different in lithology, they record similar magmatism phases, indicating the existence of genetic connections among them. Recently, 2.8-2.9 Ga rocks were identified in many areas, indicating the existence of Mesoarchean basement on a certain scale in Lushan. Compared with the Precambrian evolution of Jiaodong and Huoqiu, it is concluded that a Mesoarchean block, which underwent a significant crustal growth event at 2.9-3.0 Ga, may be present along the southern margin of the North China Craton.