Hanger rail adjusting and connecting structure and interior door

The utility model relates to an overhead rail adjusting and connecting structure and an interior door. The overhead rail adjusting and connecting structure comprises a preassembled rail, an adjusting piece, an overhead rail assembly and a connecting piece. The adjusting piece is mounted on the preassembled rail, and the size of the adjusting piece in the direction perpendicular to the preassembled rail is adjustable; the hanger rail assembly is connected to the adjusting piece through the connecting piece in the direction perpendicular to the preassembled rail. The problem that the using effect is poor due to the fact that an existing hanger rail is directly connected with a ceiling can be solved, firstly, the problems that due to the fact that the ceiling of an existing product is not horizontal, when a sliding door is opened and closed, the opening and closing force is large, the hand feeling is heavy, and the experience feeling is poor in use are solved, and the sliding door is light in hand feeling, flexi