The invention discloses a method for treatment and cover-and-cut of temporary stand columns by using expansion reinforcing bands. The method comprises steps as follows: envelope structures are completed downwards from the ground surface on two sides of a cover and cut-bottom up area of underground engineering across an intersection, vertical steel pipe columns are constructed between the envelope structures on two sides, a cover plate is supported by the envelope structures and the steel pipe columns, a concrete pavement system is cast in situ or a precast concrete pavement system is laid on the cover plate, and traffic at the intersection of roads is resumed; earth excavation is performed below the cover plate, an underground structure main body is constructed, and multiple preformed transverse expansion reinforcing band grooves are preformed; the pavement system is removed and the steel pipe columns are completely cut after traffic reconciliation is completed, reinforcing steel bars in round empty grooves in the preformed expansion reinforcing band grooves are repaired completely, and construction of the expansion reinforcing bands is completed. The steel pipe columns filled with concrete are used for replacing latticed columns, the distance among the temporary stand columns is increased, diagonal braces among the stand columns are reduced, construction is facilitated, and the safety is enhanced; besides, the steel pipe columns can be completely cut, so that the waterproof performance and durability of top, middle and bottom plates are not affected.