Guardrail profile automatic cutting device

The utility model discloses an automatic guardrail profile cutting device which comprises a workbench, an automatic measuring mechanism, a positioning mechanism and a cutting mechanism, the top of the workbench is provided with an object carrying platform, the automatic measuring mechanism comprises a movable plate, the movable plate is arranged on one side of the object carrying platform, one side of the object carrying platform is provided with a strip-shaped through hole, and the strip-shaped through hole is communicated with the positioning mechanism. A movable strip is slidably sleeved with an inner cavity of the strip-shaped through hole, a notch groove is formed in one end of the movable strip, a fixing rod is fixedly connected to an inner cavity of the notch groove, a lantern ring movably sleeves the outer wall of the fixing rod, a scale cloth strip is fixedly connected to the outer wall of the lantern ring, a rolling cavity is formed in the object carrying platform, and a cloth roller is arranged in