Hidden hook for ceiling in vehicle

The utility model relates to the technical field of in-vehicle hidden type hooks, in particular to an in-vehicle ceiling hidden type hook which comprises a mounting plate, one end of the mounting plate is rotationally connected with a connecting block, the connecting block is connected with a connecting rod, the connecting rod is hinged to a fixing block, a mounting groove is formed in an in-vehicle ceiling, and the fixing block is fixed to one end of the mounting groove. Outer sleeve rods are symmetrically arranged at the end, away from the connecting block, of the mounting plate, inner sleeve rods are elastically connected to the interiors of the outer sleeve rods, one inner sleeve rod is connected with a supporting rod, the other inner sleeve rod is connected with a lap joint, the supporting rod is hinged to a movable rod, and the end, away from the connecting block, of the mounting plate is connected with a positioning rod; an extension rod is connected into the positioning rod in a threaded mode, and a p