Abstract: For movable pipeline, there are two different methods of river crossing, one is water-surface crossing, and the other is under-water crossing (bared pipe). The force loading on the pipelines for different river crossings are quite different. Based on analyzing and calculating the pulling force of the water-surface crossing and under-water crossing pipelines, which are caused by water flow, the paper presents respectively the applicative conditions of the two river crossing methods, with the aim of giving a reference to the engineering operations.