Abstract: The establishment and stability study of the model of stone cultural relics is of great significance for the historical information of ancient cultural relics such as social culture and national characteristics. This paper takes Dazu stone carving Reclining Buddha's hand as an example, based on the three-dimensional spatial structure information of cultural relics, uses Geomagic built-in algorithm to achieve high-precision digital model reconstruction of the Buddha's hand, and achieves better integration of NURBS surface with bedrock and structural surface through Rhino platform; combined with finite element nonlinear analysis method, the displacement and stress patterns of Dazu stone carving Buddha's hand model under static and dynamic forces are analyzed. The results show that: (1)The deviation of the finely constructed Buddha's hand model ranges from-3cm to 3cm, with an average deviation of-2mm to 1.5mm, which meets the allowable error of±5% for engineering design. (2)The displacement of the Buddha's hand under self-weight load is linearly decreasing along the five fingers(fingertips pointing to the wrist), and the maximum displacement of each fingertip is 0.46mm, 0.57mm, 0.48mm, 0.46mm and 0.44mm, respectively. (3)The change of displacement of the Buddha's hand under seismic load is related to the fluctuation of the input seismic wave. The displacement and stress of the Buddha's hand changed drastically in the first 20s of seismic wave input, reaching their maximum values at 8.6s and 13.3s, respectively, and stabilized after fluctuations, which should focus on the potential damage risk at the front end of the index finger. The research method provides ideas for modeling and stability analysis of small-scale, cantilevered stone artifacts.