The invention discloses an adjustable support for oil pipeline installation. The adjustable support comprises a bottom plate, a plurality of symmetrically-arranged fastening bolts are connected to thebottom plate in a threaded mode, two symmetrically-arranged mounting plates are fixedly connected to the upper side of the bottom plate, a first screw rod is connected into the two mounting plates, the first screw rod is connected with a platform plate through a lifting mechanism, a mounting frame is fixedly connected to the upper side of the platform plate, a mounting cavity is formed in the mounting frame, a first bevel gear is rotatably connected to the bottom of the mounting frame through a first drive shaft, the lower end of the first drive shaft sequentially penetrates through the mounting cavity and the platform plate and is connected with a shaking wheel, and the first drive shaft is sleeved with an outer gear ring. According to the adjustable support for oil pipeline installation, the height of the mounting frame can be adjusted by arranging the lifting mechanism, so that the height of support required is adjusted; and the distance between two arc-shaped clamping plates can be adjusted by arranging an adjustment mechanism, so that pipelines with different sizes can be clamped, and thus unnecessary waste is reduced.