Desk or office desk

The utility model discloses a desk or office desk which comprises a desk top and desk supporting legs. The desk or office desk is characterized in that the supporting legs include supporting leg upper portions and supporting leg lower portions, the supporting leg upper portions sleeve the supporting leg lower portions, the supporting leg lower portions can slide in the supporting leg upper portions, universal pulleys are arranged at low ends of the supporting leg lower portions, the supporting leg upper portions contact with the universal pulleys, and a heating device is arranged in the length direction of the desk. By the aid of the pulleys and the heating device, the desk easily and freely moves and has a heat insulation effect in cold weather, focused attention of learning and office staff is ensured, and learning and office efficiency is improved.