Construction method of comprehensive pipeline protection system supporting system

The invention discloses a construction method of a comprehensive pipeline protection system supporting system. The method comprises the following steps that multiple stand column holes which are formed at intervals are dug in supporting earthwork, and multiple stand columns are mounted in the multiple stand column holes respectively; a belfast truss support is fixedly arranged at one sides of the stand columns, belfast trusses are mounted on the belfast truss support, box iron is used for penetrating through and being supported on the belfast trusses, and the box iron is located below ground pipelines and used for supporting the ground pipelines; suspension assemblies are arranged on buried pipelines, and the upper ends of the suspension assemblies are fixed to the box iron; the supporting earthwork is dug, and engineering foundation pit retaining and protection construction is conducted; after construction is completed, supporting seats are arranged below the ground pipelines and the buried pipelines respect