1,1-Dimethyl-hydrazin-1-ium picrate.

In the title compound, C(2)H(9)N(2) (+)·C(6)H(2)N(3)O(7) (-), the dihedral angles between the mean planes of the three nitro groups and the benzene ring are 63.5 (3), 10.5 (2) and 10.