The invention discloses a spring locking type trolley case hook device. The device includes an intermediate rotating shaft, and hanging arms are disposed on both ends of the intermediate rotating shaft. A hook is disposed at bottom of each hanging arm, and a clamping connecting part is formed between the bottoms of the hooks. The two ends of an intermediate connecting plate are formed on the middle top face of two hanging arms, and a connecting frame is fixed on the intermediate connecting plate. A groove is disposed on the bottom beam of the connecting frame, and a wiring board is sleeved in the groove. A bending part is formed on the top side of the wiring board, and the bending part is in the middle cavity of the connecting frame and is pressed against the top of the bottom beam of the connecting frame. The device can make the handle of the trolley case place between the hook and the wiring board, and people hold the sliding holding sleeve, so that the hand has no friction with the other parts, and the usage comfort level is improved. Moreover, the hanging arms and the intermediate rotating shaft use as a rotating joint in the shock, the influence on the hand caused by the shock is reduced, and the usage comfort level is greatly improved.