A method of producing xylylenediamine of the present invention includes
the steps of: subjecting a liquid mixture of phthalonitriles with liquid
ammonia or a mixture of liquid ammonia and an organic solvent to a first
catalytic hydrogenation treatment, thereby hydrogenating the
phthalonitriles to obtain a reaction product (A), wherein a content of
the liquid ammonia or the mixture of liquid ammonia and an organic
solvent is 80 wt % or more; removing the liquid ammonia in the reaction
product (A) to obtain a reaction product (B); subjecting the reaction
product (B) to a second catalytic hydrogenation treatment, thereby
hydrogenating cyanobenzylamine to obtain a reaction product (C); and
distilling the reaction product (C) to purify xylylenediamine.