To provide a branching controller which facilitates the installation and alteration of an electromagnetic guide path, makes secure and easy a choice and a guidance to the right or left, specially, at a branch point on the guide path, and reduces the facility cost.

This branching controller consists of the magnetic guide path 11 which is arranged on a floor surface for a circular tour of desired places and has branch points, an automated guided vehicle 17 which travels while detecting the guide path and can be steered, address magnet members 14, 15, and 16 for branching which are installed at the branch points 13-1, 13-2, and 13-3, and a control means which is mounted on the automated guided vehicle 17 and detects and compares the addresses of the address magnet members with previously set right/left judgement numerals and select the direction to the right or left to make an indication for turning: and the facility costs are much lower than those of a conventional electromagnetic wire system and the route change of the magnetic guide path 11 and the operation become very easy. Further, a choice between the right and left and a guidance of the unmanned truck and made secure and easy.