Outdoor combined blackboard

The utility model discloses an outdoor combined blackboard which comprises a first stand column, a second stand column, a first supporting leg and a second supporting leg, the first stand column and the second stand column are arranged in parallel in the vertical direction, the cross sections of the two stand columns are both in a U shape, and the opening directions of the two U shapes are opposite. A first cross beam and a second cross beam are installed at the top and the position close to the bottom of the first stand column through rotating shafts respectively, the hinged end of the secondcross beam stretches into the U-shaped groove body of the first stand column, and inserting holes are formed in the free end of the first cross beam and the free end of the second cross beam. And fourth cross beams and third cross beams are mounted at the tops and the positions close to the bottoms of the second stand columns through pin shafts. The combined blackboard has the beneficial effectsthat the combined blackboa