木拱桥是指由木杆构件纵横相贯形成的拱状木桥,因其形如虹,俗称虹桥。本文分析了现存的闽浙木拱廊桥与宋代汴河虹桥的结构差异,并比较其他形式的木拱结构,探讨了闽浙木拱廊桥的施工程序。There is a timber arch bridge,consisted of two groups of lengthwise components that were placed alternately,namely Hongqiao,or Rainbow Bridge.This article analyses the structure feature of The Bian river Rainbow Bridge and the wood timber arch bridges in Fujian and Zhejiang provinces,compares them with other timber arch bridge,makes detail analysis and discussion on the construction method and the architectural feature