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In 1991～1992, the Archaeology Section, Tianjin Municipal Museum of History, carried out survey and trial excavation at the Lancheng site to the south of Lancheng village in Gaocun township, Wuqing county, Tianjin, which resulted in the revelation of an ash-pit, an ash-trench and two wells. Judging from the stratigraphic superimposition and the combination of objects discovered during the work, the site represents four developmental stages. The first stage belongs to the Warring States period and features the combination of A type of jar, dou stemmed vessel, and semi-cylindric tile, that of Ⅰ type of plate, A Ⅰ and B Ⅰ subtypes of basin, and A Ⅰ subtype of red pottery fu cauldron, that of semi-tile-ends with double-dragon, 山 -shaped and taotie designs respectively, and knife money exclusively for funeral use. The second stage corresponds to the Han dynasty. Most of the objects are continuations from the first stage, while the newly-introduced include the AⅡ , BⅡ and DⅡ subtypes of basin, AⅡ subtype and B type of flat tile, cloud pattern tile-end, AⅢ and BⅠ subtypes of red pottery cauldron, and "hanliang" and "Wuzhu" coins. The third stage was still in the Han period. Its objects feature inheritance from the second stage in most cases and the appearance of the CⅡ and DⅡ subtypes of jar, BⅡ subtype of dou, CⅡ subtype of basin, C type of semi-cylindric tile and CⅠ type of red pottery cauldron. The fourth stage is assigned to the last years of the Eastern Han dynasty. A small number of objects were inherited from the third stage; among the new artifacts are the E type of jar, C type of flat tile, D type of red pottery cauldron, charcoal stove, B type of small red pottery jar, Ⅱ type of cloudpattern tile-end, and small-sized "wuzhu" coin.