The invention provides a ventilating anti-drag support column structure for a supercavity surface vehicle. The ventilating anti-drag support column structure comprises a support column and a ventilating cavitation generating device, the ventilating cavitation generating device comprises gas-holder tanks and cavitators, the gas-holder tank and the cavitator are arranged on the two sides of the support column correspondingly, the gas-holder tanks are provided with ventilating holes, and the gas-holder tanks communicate with ventilating pipelines, and the ventilating holes are formed behind the reverse flow surfaces of the cavitators; the shape of the support column is divided into and upper part and a lower part, the upper part support column has a 45-degree inclined angle and is in an A shape, and the lower part support column is perpendicular to the water surface and is in an H shape; and the front edge line and the rear edge line of the support column form a splay shape outwards. According to the ventilating anti-drag support column structure, the cavitators are arranged on the support column, thus the surface of the support column is covered with cavitation, resistance of the surface of the support column can be greatly reduced by reducing the wet area on the surface of the support column due to the fact that resistance of an object in water is 800 times larger than resistance in air, and thus good anti-drag effect is achieved; and higher speed of the supercavity surface vehicle is achieved, and more fuel is saved in the same main motor power.