In road construction at all levels, the quality inspection and control of road-based compaction is very important. The compaction of roadbed and backfilling soil is aimed at improving its strength and stability, reducing the permeability of the roadbed, reducing the uneven deformation caused by freezing, thus ensuring that the road surface has sufficient mechanical strength and stability to resist the load effect of the vehicle, and improving the life of the road. This paper discusses the reason that causes the damage of the roadbed surface is that the compaction index in the roadbed construction does not meet the requirements, and puts forward that only the roadbed structure layer can be fully compacted, in order to ensure the roadbed strength, stiffness and flatness, to ensure and extend the service life of the roadbed, road surface, reduce the waste of funds.
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