An organophotocatalyzed C(sp²)–H/N–H cross-dehydrogenative coupling of cyclic aldimines with aliphatic amines has been developed, which represents the first example of visible-light-induced C–H amination of N-sulfonylated imines. This methodology enables the streamline assembly of amine derivatives via radical mediated C–N bond formation. The current protocol features transition-metal-free, mild conditions, good functional group tolerance and good yields.