Rail trolley system and control method thereof

The invention discloses a rail trolley system which comprises a rail arranged along a running path and a trolley running on the rail along the running path, the running path comprises a main path and a plurality of branch paths, one end of each branch path is communicated with the main path, and a guide rail is arranged at the joint of the main path and the branch paths; by arranging the guide rail suspended above the rail joint and the guide wheels changing positions towards the two sides of the guide rail according to the running route before entering the guide rail, rail transfer can be achieved through a simple structure, and the problem that in the prior art, a trolley is unstable due to rail transfer in the running process is solved; and the running path of the trolley is judged according to the motion path of the existing trolley on the main path and the branch path, so that the situation of collision between track motion and the trolley is avoided, the whole working process is smoother, and the workin