Method for adjusting assembly gap between cabin door and door frame of airplane

The invention discloses a method for adjusting an assembly gap between an aircraft cabin door and a door frame, and the method comprises the steps: firstly selecting a to-be-adjusted lock ring suitable for the method from all lock rings of the aircraft cabin door and the door frame, then selecting a plurality of feature points at the periphery of each to-be-adjusted lock ring, and collecting an original coordinate set of each feature point; arranging and combining a plurality of adjustment combination modes according to the adjustment capability of the adjustment lock ring, finally obtaining an adjustment coordinate set of each feature point adjusted by the adjustment combination modes through a finite element assembly model, and selecting a target adjustment mode combination from various adjustment mode combinations by comparing the original coordinate set with the adjustment coordinate set. Compared with the prior art, local deformation adjustment is directly conducted on the aircraft cabin door through the