Abstract:Lanxi Tongzhou Bridge is located in Lanxi County, Zhejiang Province. Guangxu twelve years (AD 1886) began to rebuild the wooden bridge for stone bridge. Tongzhou bridge is made of stone masonry and six piers with a total length of about 80 meters. The lower part of the bridge is a semicircular arch structure with longitudinally connected stones, and the water facing surface is sharp, which can effectively prolong the service life of the bridge.