Ancient pagodas are representative ancient buildings in China.The safety assessment of the ancient pagoda is an essential means and content for the preventive protection or repair protection of cultural relics buildings,and tilt is one of the most important indicators to e-valuate the ancient pagoda.Stone structure ancient pagoda is non-rigid body,the upper and lower sections are generally not the same,the traditional measurement method of the ancient pagoda tilt accuracy is low and has great difficulty,this paper mainly on the application of three-dimensional laser scanning technology in the stone structure of the ancient pagoda tilt measurement is analyzed and summarized,and the effect is good.