The invention discloses a concrete terrace pouring vehicle for building construction. The concrete terrace pouring vehicle comprises a vehicle head and a base plate, the base plate is fixedly connected with the vehicle head, and wheels are arranged on the vehicle head and the base plate; stirring blades are installed on a driving shaft; a limiting shaft support is horizontally arranged on the outer wall of the right side of a material storage box, a first driven shaft is vertically and rotationally arranged on the limiting shaft support, a driven belt wheel is installed on the first driven shaft, a driving belt wheel is installed on the driving shaft, and a transmission belt is sleeved with the position between the driving belt wheel and the driven belt wheel; an intermittent gear is in meshed connection with a first straight gear; and a driven gear is fixedly installed on a second driven shaft. A swing rod of the concrete terrace pouring vehicle swings left and right to drive a discharging disc to swing, the concrete pouring area is increased, meanwhile, distribution of concrete is more even when a terrace is poured, a rotary disc rotates to conduct rotary slicking treatment on the concrete, the rotary disc swings along with the swing rod, the scraping scope of a scraper blade is enlarged, the terrace flatness is improved, and meanwhile, the leveling efficiency is improved.