The utility model discloses a sliding pipe support special for a gas pipeline. The technical problems that in the background art, an existing sliding pipe support cannot fix a pipeline to a buttress,a gas pipeline floats upwards, the stress of the pipeline is seriously changed, pipeline damage and gas leakage are seriously caused, and serious safety accidents are caused are solved. According to the technical scheme, the sliding pipe support special for the gas pipeline comprises a U-shaped bolt used for limiting the gas pipeline and a support supporting structural part fixed to a buttress ina public pipe gallery, and the U-shaped bolt is connected with the support supporting structural part; a sliding groove which is matched with the outer arc face of the gas pipeline and used for containing the gas pipeline is formed in the upper surface of the support supporting structural part in an inwards-concave mode. The supporting structure has the advantages that when the gas pipeline is soaked in water, the supporting structure of the support is fixed on the buttresses, displacement of the gas pipeline due to expansion caused by heat and contraction caused by cold is not affected, and safety accidents caused by water entering the underground public pipe gallery can be effectively avoided.