The invention discloses a positioning stand column for an inclined cantilever. The positioning stand column comprises a positioning pipe (1) and a support (2). The support (2) comprises an insertion portion (2-1) inserted into one end of the positioning pipe (1), a transition table (2-2) is arranged on the insertion portion (2-1), a fixing plate (2-3) for supporting the inclined cantilever is arranged on the transition table (2-2), a connecting hole (2-31) is formed in the fixing plate (2-3), a U-shaped bolt (3) connected to the interior of the connecting hole (2-31) to fix the inclined cantilever is arranged on the fixing plate (2-3). A groove (2-32) for containing the inclined cantilever is formed in the fixing plate (2-3). A fixedly-connected rivet (4) is arranged on the support (2) and the positioning pipe (1). By adopting the structure, the numbers of positioning rings, positioning pipes and fasteners are decreased, on-site construction and installation and follow-up maintenance are convenient, the product safety is improved, and potential operational risk is reduced.