Abstract:In urban road construction, the red line of road is often encountered. It has to solve the problem of slope protection of roadbed slope outside the red line. Taking the slope protection of roadbed outside the red line at the intersection of North Jiangbin Road and Ring II Road in Yongtai County, Fujian Province as the case background, the application of anchor cable anti-slide pile in the protection of ancient building foundation stability is discussed, and the calculation principle and method of anchor cable anti-slide pile are briefly expounded, which can be referred for the similar projects and have certain guiding significance.