Sectional type supporting bottom section steel stand column

The utility model relates to the technical field of building construction site production tools, in particular to a sectional type supporting bottom section steel stand column which comprises a plurality of section steel stand column bodies, and the section of each section steel stand column body is of an H-shaped structure. Each connecting assembly is arranged at the ends, close to each other, of every two adjacent profile steel stand column bodies, each connecting assembly comprises two connecting end plates, the connecting end plates are welded to one sides of the profile steel stand column bodies correspondingly, and each connecting end plate is provided with a set of connecting screw holes; each group of connecting screw holes are integrally distributed in a rectangular array; the section steel stand column can be segmented in advance, the end plates are arranged and connected through the bolts, mounting and dismounting are convenient, only one operator needs to use a wrench in the mounting and dismounti