The four-way shuttle can shuttle in the four directions of front, back, left and right in the plane. The three-dimensional warehouse is an intelligent three-dimensional warehouse which combines automatic stacker, logistics conveying line and other functions such as unmanned guidance and automatic handling in one. The shuttle robot needs to run on the track, because it runs on a fixed track, the car is faster, the positioning is more accurate, and the control is simple and easy to use. The four-way shuttle can not only move in four directions, but also schedule according to the specific requirements of the system. This kind of stereoscopic library is more suitable for the scene with large storage capacity and general access frequency.