The utility model relates to a pipeline flow stabilizing device comprising a honeycomb hole member, fixing discs, a first main pipe, fixing bolts, a second main pipe, through holes, and fixing bolt holes. The honeycomb hole member is provided with the through holes and the fixing discs, the fixing discs are provided with the fixing bolt holes, the honeycomb hole member is arranged between the first main pipe and the second main pipe through the fixing bolts and the fixing discs, condensate water flows into the first main pipe through the through holes of the honeycomb hole member, the velocity is uniform and stable, and the impact force is reduced.