Disclosed is a process for producing xylylenediamine, comprising supplying a solution of phthalonitriles dissolved in a solvent into a reactor packed with a catalyst and hydrogenating the phthalonitriles to obtain xylylenediamine. The process is characterized by comprising stopping the supply of the solution, bringing a washing liquid having a phthalonitrile content of not more than 3% by mass and a xylylenediamine content of not less than 1% by mass into contact with the catalyst, and restarting the supply of the solution after the contact, whereby the catalyst is continuously used in the hydrogenation reaction. The process can realize continuous use of the catalyst for a long period of time and thus can significantly reduce the cost of the catalyst.