Large-area concrete ground high-flatness construction device and construction method thereof

The invention discloses a large-area concrete ground high-flatness construction device and a construction method thereof. The large-area concrete ground high-flatness construction device comprises twoside supporting rods, an end supporting rod, a top connecting table, two sleeving clamping frames, a frame plate, a leveling seat and a flat pressing table, the two side supporting rods are parallelly arranged, and lower supporting rods are vertically arranged on the lower parts of the two ends of the two side supporting rods correspondingly. The large-area concrete ground high-flatness construction device has the beneficial effects that a first hydraulic oil cylinder drives hammer pressing plates through first hydraulic columns to quickly extend and move downwards to conduct hammer pressingand leveling on a protruding part, so that the flatness of the concrete ground is higher, the automation degree of conducting hammer pressing and leveling work on the concrete ground by the large-areaconcrete ground high-flatn