A tilting apparatus for a vehicle deck is provided. The tilting apparatus increases the efficiency of a loading and unloading workability by tilting the vehicle deck vertically or horizontally based on situations or conditions of construction fields or industrial fields. The tilting system includes a structure with vertical and horizontal tilting performed in a single system by joining a deck plate and a chassis frame of the deck with a ball joint structure of four locations (e.g., front, back, left, and right locations) and implementing a hydraulic system that may be tilted in two directions.