In this paper, a new process for synthesizing m - chloro - N,N - bis(2 - cyanoethyl) aniline from m - chioroaniline and acrylonitrile was reported by using AlCl3 as the catalyst. The experimental result had proved that AlCl3 was an excellent catalyst, The reaction was carried at 75 - 90 ℃ for 20 h, the amount of the catalyst AlCl3 used was 60 % of the weight of m - chloroaniline, the conversion obtained was about 85 % with a yield over 95 %. In comparison with other methods, there were some advantages in this method: the reaction temperatur...