The invention relates to an offshore wind power buoyant foundation form and in particular relates to an offshore wind power spar buoyant foundation capable of towing, which comprises a connecting column and is characterized in that the upper end of the connecting column is connected with a fan through a flange ring, a plurality of flat columnar closed air flotation boxes are arranged at the middle part of the connecting column, the closed air flotation boxes are not communicated with the connecting column, and the bottom of the connecting column is communicated with a loading cabin; a column body of the connecting column is provided with a detachable gear required for towing; and a mooring rope is arranged at the center of gravity of the buoyant foundation. Compared with the prior art, the offshore wind power spar buoyant foundation provided by the invention has the beneficial effects that the construction is convenient, rolling towage can be realized, the resistance of a wave flow is reduced, the stress concentration and fatigue damage caused by the traditional spar foundation in a wet towing process are avoided, the construction difficulty and construction cost are greatly reduced, and the offshore wind power spar buoyant foundation can be recycled. The additional mass and viscous damping of heave motion are effectively improved by virtue of the flat air flotation boxes, the water surface profile area of a buoy is effectively increased by virtue of the flat air flotation boxes on the water surface, a relatively large restoring moment is provided, the structure stability is relatively good, the center of gravity is lower than the center of flotation, and the resistance to capsizing is good.