The invention relates to an ocean deep drilling exploration and well drilling operation drill column suspending method. Pulling-out includes the following steps that 1, stands and temporary connectingdrill rods are arranged in a well; 2, the stands are clamped by a ground hydraulic elevator, and the stands are fixedly suspended; 3, a top drive hydraulic elevator descends to a low position, and the temporary connecting drill rods are buckled; 4, the top drive hydraulic elevator is lifted, the ground hydraulic elevator is loosened after the top drive hydraulic elevator is stressed, and the ground hydraulic elevator is moved away from a well mouth; 5, the stands are lifted by the top drive hydraulic elevator; 6, after upper connectors of the drill rods at the uppermost ends of the stands arelifted to corresponding heights, the ground hydraulic elevator is moved in again, and stand connectors are clamped; 7, the top drive hydraulic elevator descends, the weights of drill columns are released, and the ground hydraulic elevator bears the weights; and 8, the stands are lifted by the top drive hydraulic elevator. The bearing capacity of the drill columns is improved, bearing points are changed, the problem about switching of the power elevators is solved, harm of slip clamping to the drill columns is reduced, and the problem of difficult screwing-on is solved.