The utility model discloses a ground trowelling device for concrete construction, which comprises an operating rod, a connecting disc, a safety cover, a main trowelling mechanism, an auxiliary scraper and a folding mechanism, the bottom of the operating rod is hinged with a connecting ring, the top of the connecting disc is provided with a connecting hole, and the connecting ring is rotatably connected to the connecting hole; the safety cover is fixedly connected to the middle position of the bottom of the connecting disc, an inner cavity is formed in the safety cover, the main trowelling mechanism is arranged in the inner cavity of the safety cover, auxiliary scrapers are hinged to the two sides of the main trowelling mechanism correspondingly, rotating shafts are fixedly connected to the tops of the two sides, away from the main trowelling mechanism, of the auxiliary scrapers, and the folding mechanism is arranged on the main trowelling mechanism. And the safety cover is made of a transparent material and is arranged to be in a cross rod hollow-out shape, and in order to conveniently observe the rotation condition of the internal motor, due to the fact that concrete is splashed to the interior and the exterior of the safety cover when the scraper rotates to conduct leveling, timely cleaning is facilitated.