In the title compound, C14H22N4S 2, a diethyl disulfide bridge containing an S - S bond of 2.0396 (6) Å connects two 3,5-dimethylpyrazole rings via the N1 atoms. The disulfide molecules are linked by weak C - H⋯π(pyrazole) interactions into chains that propagate along the b direction. © 2003 International Union of Crystallography Printed In Great Britain - all rights reserved.