Steel bar cutting device based on building construction

The utility model relates to the technical field of building construction reinforcing steel bar cut-off accessory devices, in particular to a building construction-based reinforcing steel bar cut-off device which can automatically convey reinforcing steel bars to cut off, so that the reinforcing steel bar cut-off efficiency and effect can be improved, and the practicability is enhanced. Comprising a box body, a power source, a control processor, a cutting blade, a driving motor, a first connecting plate, a first electric telescopic rod and a seasoning table, the box body is provided with a working cavity, the power source is arranged in the middle area in the working cavity of the box body, and the control processor is arranged in the center area of the front end of the box body and connected with the power source; the bottom of the top end of the first connecting plate is connected with a first electric telescopic rod, a driving motor is arranged on the left side of the bottom of the first electric telescopi