Guardrail flower box

The utility model discloses a guardrail flower box which comprises a flower box frame, guardrail stand columns are arranged on the two sides of the flower box frame, square sleeves are connected to the two sides of the surface of the flower box frame in a sliding and sleeved mode, clamping plates are fixedly connected to the tops and the bottoms of the square sleeves, and the ends, away from the square sleeves, of the clamping plates penetrate into the guardrail stand columns. The bottom of the side, away from the guardrail stand column, of the square sleeve is fixedly connected with a transmission box, and the interior of the transmission box is movably connected with a Z-shaped toothed bar through a bearing seat. The flower box frame is supported by the clamping plate through the mouth-shaped sleeve and the guardrail stand column, then the positioning plate is driven by the elastic piece and the square sleeve to penetrate through the sleeve plate and is clamped into the clamping groove to fix the position o