The traditional physical contact MPO fiber connector requires that all fiber end faces achieve physical contact at the same time. Otherwise, there will be an unintended air gap between the optical fiber end faces, resulting in multiple reflections between the fiber end faces and seriously degrading the optical signal transmission. To achieve simultaneous physical contact for all fiber end faces, first all fiber end faces must protrude significantly from the surrounding ferrule surface through polishing, and then large working pressure must be exerted on the MPO connector so that the fiber end faces deform to allow all fiber end faces to make physical contact simultaneously. Because of the design, there are numerous problems with traditional MPO connectors.