Telescopic scraping bar for building floor concrete flatness construction

The utility model discloses a telescopic scraping bar for building floor concrete flatness construction, which comprises a scraping bar main body, stretching rods, a vertical rod and a rotating wheel, the stretching rods are arranged at two ends of the scraping bar main body in a penetrating manner, and a nut is arranged at one end of each stretching rod. The length position of the scraping lever can be accurately adjusted by pulling the stretching rod out of the scraping lever main body and observing scale values on the stretching rod, so that the length position of the scraping lever can be adjusted according to the actual area of a floor, and the length position of the scraping lever can be adjusted by screwing the control valve on the side edge of the scraping lever main body through the limiting hole and the control valve. The position of the stretching rod can be fixed by controlling the inner end of the valve to be inserted into the limiting hole, the stretching rod is prevented from moving, the elevat