In the process of the present invention for producing a xylylenediamine by a
liquid-phase
hydrogenation of a dicyanobenzene in the presence of a catalyst, the catalyst having
its activity decreased during the course of use in the hydrogenation is reactivated
and a pressure drop through a fixed bed catalyst layer is got rid of, thereby regenerating
the catalyst for reuse in the subsequent hydrogenation of the dicyanobenzene to
produce the xylylenediamine. The catalyst is regenerated by brought into contact
with a hydrogen-containing gas under controlled temperature conditions.
