The invention discloses an adjustable vertical pipe integral support and a construction method thereof. The adjustable vertical pipe integral support is characterized in that the support comprises a cross rod and support legs at two ends, wherein the cross rod and the support legs are made of C-shaped steel; an angle steel wing plate is welded at each of the two ends of the cross rod, a round holeis drilled in each angle steel wing plate, and first T-shaped bolts penetrate through the round holes to be tightly connected with C-shaped notches of the support legs; the support legs are fixed ona wall body by expansion bolts through steel plates; and second T-shaped bolts are connected with the C-shaped notches of the cross rod, a pipeline is fixed to the outer side of the cross rod by usingU-shaped hoops and the second T-shaped bolts, and the support legs and the T-shaped bolts on the cross rod can slide back and forth to adjust the fixing position. The construction method comprises the steps that parts needed by the support are manufactured, then are assembled and installed on a wall according to positioning, and the pipeline is installed to be tightly attached to the support. Thesupport is simple in structure, adjustable, convenient to use and wide in applicability, the process is adopted, pipelines are installed orderly and uniformly, sequencing is reasonable and standard,the installation time is saved, and the labor cost is reduced.