The invention discloses a digital model selection method for shield tunnel segment assembling point locations. The method comprises a step of determining a segment assembling point location scheme, wherein first, tunnel design parameters are collected; second, a transformed right-angle guiding rule is adopted to determine the locations of molded segments relative to a shield machine, and optimal segment assembling point locations are determined by collecting on-site tunneling parameters and importing the on-site tunneling parameters into a digital model selection calculation formula; and last, a slowly-expansive rubber water bar is pasted to the outer circular surface of each segment, and segment assembling operation is performed. The method has the advantages that model selection speed is high, the segment locations are accurate, and the application range is wide; lining staggered jointing point locations of general segments can be quickly determined, deviation between the molded segments and a tunnel design axis is reduced, engineering quality of a tunnel is guaranteed, and the method is suitable for determination and assembling construction of the lining assembling point locations of the general segments in a shield tunnel by the adoption of a staggered jointing mode.