Abstract: To study the influence of arch rise\|span ratio on station structure in underground excavation arch\|cover method construction, taking a metro station project in Qingdao as example, based on MIDAS GTS finite element software, the influence of different rise\|span ratios on structure stress and deformation are comparatively analyzed, in the case of two station structures with platform width of 11 m and 13 m respectively. Research results show that when the rise\|span ratio increases from 0.16 to 0.24, the bending moment of the vault at the arch construction stage is the largest, and the bending moment first decreases and then increases. During the construction of the overall structure, the bending moment at the junction of the arch and the straight wall is the largest, and the bending moments of the station with 11 m and 13 m spans are reduced by 42.1% and 44.6% respectively. The axial force decreases with the increase of the rise\|span ratio, and the ratio has a greater influence in the arch construction stage. In addition, the influence of rise\|span ratio on structure deformation is evident, and the settlement of the vault, the settlement of the spandrel and the clearance of the arch foot are reduced by roughly 1/3. When considering the overall structure construction and the reasonable station structure span height, larger arch section rise\|span ratio corresponds to more reasonable structure.