The invention discloses a method for treating a circuit board. The method comprises the following steps: (1) performing crushing treatment on the circuit board; (2) performing pyrolysis treatment on the circuit board subjected to the crushing treatment in a radiant tube revolving bed, so that high-temperature oil gas, zinc fume and residues are respectively obtained, wherein the residues contain metals and inorganic glass fibers, the radiant tube revolving bed is provided with a combustor, and the combustor supplies heat to the radiant tube revolving bed through combustion fuel; (3) performing first separation treatment on the high-temperature oil gas so as to obtain pyrolytic tar and pyrolysis gas respectively, and supplying the pyrolysis gas to the combustor of the radiant tube revolving bed for serving as fuel; (4) performing first cooling treatment on the zinc fume so as to obtain metal zinc; and (5) performing second separation treatment on the residues so as to obtain a copper-containing metal mixture and the inorganic glass fibers respectively. According to the method for treating the circuit board in the embodiment of the invention, the resource recycling and maximum utilization of energy in the circuit board can be realized.