An optical fiber coupling assembly includes a first optical fiber connector and a second optical fiber connector. The first optical fiber connector includes a first body having a first light incident surface, first optical lenses, first plugs, and second plugs. The first optical lenses, the first plugs, and the second plugs are formed on the first light incident surface. The first optical lenses are positioned between the first plugs, and the first plugs are positioned between the second plugs. The second plugs are longer than the first plugs. The second optical fiber connector includes a second body having a second light incident surface and second optical lenses formed on the second light incident surface. First engaging holes and second engaging holes are defined in the second light incident surface. The first plugs are inserted into the first engaging holes, and the second plugs are inserted into the second engaging holes.