Double-pile one-column joint construction method for solving height difference of reverse-construction floor slabs

The invention relates to the technical field of constructional engineering, in particular to a double-pile one-column joint construction method for solving the height difference of reverse-construction floor slabs. The double-pile one-column joint construction method comprises the following steps of S1, constructing a foundation pit enclosure wall and lower reverse-construction steel pipe piles on the two sides of the foundation pit enclosure wall; S2, digging out a first layer of soil body; S3, underpinning steel beam construction; S4, upper consequent-construction steel column construction; S5, construction of frame beams with different elevations on the two sides of the upper consequent-construction steel columns; and S6, pouring concrete into the frame beams with the different elevations on the two sides, wherein a relatively low beam plate of the first-layer frame beam and a relatively high beam plate of the first-layer frame beam are formed correspondingly, and a double-pile-one-column connecting joint