The aromatic amine obtained by catalytic hydrogenation of the aromatic nitro-compounds caused by contacting gas-liquid in gas-liquid reactor (5) is mixed with the aromatic amine obtained by catalytic hydrogenation of the aromatic nitro-compounds in gas phase of gas phase reactor (19). Then, the mixture is distilled by a first rectifying tower (35), after removing the low boiling point impurity, the discharge liquid of the first rectifying tower (35) is led into a second rectifying tower (40) to distill to remove the high boiling point impurity. So, the energy needed in the distilling operation is restrained while producing the aromatic amine.