The invention discloses a supporting frame for a petroleum pipeline. The supporting frame comprises a mounting base and a stand column, wherein the stand column is welded to the center position of the top of the mounting base; a first pipeline placing groove is formed in the center position of the top of the stand column; two first sliding rails which are oppositely arranged are welded to each of the two sides of the stand column; two first sliding rails located on the same side of the stand column are connected with a branch support in a sliding mode; second pipeline placing grooves are formed in the tops of the branch supports; first rotating rods are arranged on the sides of the bottoms, away from each other, of the two branch supports; the branch supports are connected with connecting plates through the first rotating rods in a rotating mode; and first rectangular grooves for mounting the top of the base are further formed in the two sides of the stand column. The supporting frame is simple in structure, a worker only needs to rotate rotating wheels on screw rods so as to adjust the height position of the branch supports on the corresponding sliding rails so that the second pipeline placing grooves in the branch supports can be finely adjusted in the vertical direction, and therefore the mounting requirements of the petroleum pipeline can be better met.