Calibrating device of portable automatic weighing apparatus

The invention discloses a calibrating device of a portable automatic weighing instrument, which comprises a calibrating seat, a calibrator for calibrating the calibrating weight is arranged at the bottom of the calibrating seat, a folding box body filled with a heavy object after being unfolded is arranged at the top of the calibrating seat, the bottom of the folding box body is connected with the calibrator, and supporting legs are arranged on the bottom surface of the calibrator. The supporting legs are placed on the top face of the automatic weighing apparatus, and the calibrator calibrates the weight of the heavy object and compares the weight with a measurement value F of a measurement system of the automatic weighing apparatus. The beneficial effects of the invention are that the volume and the weight of the automatic weighing apparatus calibrating device can be changed at any time through the folding box body, the portable automatic weighing apparatus calibrating device is convenient to carry, differen