Abstract:Songjiang Leaning Tower on the outskirts of Shanghai was built earlier than the world-famous Leaning Tower of Pisa in Italy, and its tilt exceeds that of Pisa, attracting worldwide attention. Songjiang Tianma Mountain Huzhu tower was built in 1079 AD. The tower is a brick and wood mixed structure with a seven-story pavilion and octagonal plane. The tower footing is made of brick and stone, and the tower body is made of black brick. Because of the Qing Dynasty Qianlong period suffered from fire, it began to tilt. Repair and reinforcement adopt "encircle, support, repair" plan.