Jiangzhai (Chinese: 姜寨; pinyin: Jiāngzhài) is a Banpo phase Yangshao culture archaeological site in the east of Xi'an, where the earliest copper artifacts in China were found.

[1] The Jiangzhai site is located on the east bank of the Lin River in Lintong District, Xi'an, Shaanxi Province, only 15 km (9.3 mi) east of the Banpo site and about 30 km (19 mi) from the center of Xi'an.

Excavated between 1972 and 1979, it is a prehistoric settlement site of the Neolithic period in the Yellow River basin.

It is the largest and most complete Neolithic village site discovered so far in the Yellow River basin.

However, the brass found at the site has many impurities, and although the fragments discovered resemble fabricated objects, their possible uses are unknown.