白河口遗址位于承德县上板城镇上板城村东50米,东距滦河500米,南距白河300米,为两河交汇处的高台地。遗址的北、东两侧分别有京承、承锦铁路通过。遗址东西长约50、南北宽约300米,面积约为15万平方米(图一)。 1990年4月以来,先后三次对该遗址进行调查。遗址西侧断面暴露文化层,厚度平均50厘米。层内夹杂陶片、灰土等,还可 Baihekou site is located 50 meters east of Shangban Village in Shangban Town, Chengde County, 500 meters to Luan River in the east and 300 meters to Bai River in the south, serving as a high platform for the intersection of the two rivers. Ruins of the North, East, respectively, Beijing Cheng Cheng, Cheng Jin Railway passed. The ruins of about 50 things, north-south width of 300 meters, an area of ​​about 150,000 square meters (Figure 1). Since April 1990, the site has been investigated three times in succession. The western section of the site exposes the cultural layer, with an average thickness of 50 cm. Layer mixed with pottery, ash, etc., but also