The TBM excavation tunnel, due to the limitation of the boring head and the cutter, the tunnels currently excavated are of the same diameter. In order to ensure the strength of the structure in the later lining construction, it is necessary to adopt different lining thicknesses to different surrounding rock types. Our research indicates that take variable diameter full circle needle beam formwork trolley has obvious advantages in this aspect of lining. Based on the Songhua River water supply project in central Jilin cities, this paper discusses the application of variable diameter full circle needle beam formwork trolley in the TBM construction tunnel lining.