The Jiangjunya Paleolithic-Fine Stone Site was discovered in the late 1990s. It is located in Taohua Village, Jinping Town, Haizhou District, Lianyungang City, 9.5 kilometers northeast of Xinpu District, the city center, and about 300 meters away from the Taohuajian site discovered in the 1980s. Meter. The coordinates are 119°07′50.2″E, 34°31′57.3″N, and the altitude is about 8 meters. More than 70 pieces of fine stone tools have been collected through multiple investigations, and an investigation report was published in 2004.

　　Approved by the State Administration of Cultural Heritage, hosted by the Nanjing Museum, with participation by the Lianyungang Cultural Relics Management Committee and Lianyungang Museum, the archaeological test excavation of the Jiangjunya site was carried out from October 2004 to January 2005. The field work time was 80 days.

　　Before the trial excavation, a comprehensive investigation and shoveling of the site was carried out. It is estimated that the area of deposits containing stone products is about 5000 m2. According to the exploration, two test excavations in the north and south were selected, covering an area of 20 square meters.

　　The first layer of the stratum is dark brown sandy clay, plowing soil layer. Containing breccia and a large number of fine stones, the average thickness is 10-20 cm, and the thickest is 40 cm.

　　The second layer of gray-brown fine sand layer. Loose, no obvious layering. T1203 is very thin, and T2301 is about 50 cm thick at the most. It is a stoneware but contains pottery pieces. It is about 30 cm thick.

　　The third layer of off-white fine sand. Slightly cemented. Many fine stone tools and a few pottery pieces were unearthed. T1203 is missing in this layer, and T2301 is 20-50 cm thick.

　　The fourth layer is brown-yellow silty clay, the original stratum, the soil is relatively pure, and the weathered gneiss particles are slightly less. There are no relics from the Neolithic tools such as pottery pieces. A large number of stone products were produced, but the fine stone tools were significantly reduced, mainly small stone fragments. 50 cm thick.

　　The southern part of the exploration area T1203 has been excavated to the end, and the yellow and white variegated weathering crust under the 4th floor has no cultural relics. T2301, the northern explorer, has just entered the 4th floor.

　　1 to 4 layers all contain stone products. Among them, the 1-3 layers are secondary cultural accumulations, mainly fine stone tools were unearthed, but there are also some cultural relics from other times such as pottery and magnet pieces. The fourth layer is primary accumulation, mainly small stone tools are unearthed. The appearance of the second phase of culture is slightly different from the age: the age of the fourth layer is the late Paleolithic period, and it is speculated that the absolute age may be 20,000 to 30,000 years ago. The age of layers 1-3 needs to be further studied, and may have entered the Holocene.

　　More than 300 stone products were obtained from excavations in 2004. The lithology of stone tools is mostly flint, quartzite, crystal, vein quartz, and agate. Types include stone flakes, stone cores, scrapers, pointed objects, stone cones, stone arrowheads, and engravers. The stone products are exquisitely processed and the shape is stable. The fine stone tools are mainly struck by indirect hammering and then repaired by pressing, but a small amount of them are struck by smashing.

　　Judging from the lithology of the deposits, the pure gray-brown fine sand of the second layer belongs to the river and lake deposits with relatively gentle hydrodynamics, and it carries human relics by the river during the transportation process. The formation of the third layer of brown sandy clay is slightly more complicated, the transport power of the river is smaller, and the clay content increases. The fourth layer is the original cultural accumulation, its sedimentary dynamics may be mainly carried by wind, and the lithology is equivalent to the late Xiashu loess.

　　Preliminary observations show that the archaeological culture from the late Pleistocene to the Holocene in northern Jiangsu is far more complex than the results obtained in the 1980s, that is, there is not only a late finestone culture, but also an earlier late Paleolithic culture. Their cultural features are similar to those of stone tools found in Qingfengling and other places in southern Shandong in recent years. In the vicinity of the Jiangjunya site, about 10,000 years ago, there have been two human activities:-the original Paleolithic layer may be preserved between 20,000 and 30,000 years ago; the fine stone tools were left behind for about 10,000 years. culture. But these still need the support of dating data. In any case, the history of human activities in northeastern Jiangsu including Lianyungang is much earlier than we know before. The archaeological test excavation of the Jiangjunya Paleolithic site is not only of great significance for the study of the history of human activities in Lianyungang, but also of great value for the study of sea level changes and coastal changes in eastern China since the Late Pleistocene.

　　Currently, the excavation and research work of the site will continue.