The utility model provides a catalytic converter for uns -dimethylhydrazine waste gas innocent treatment, comprises air section, catalytic reaction zoon, catalysis bed section and rear, and air section, catalytic reaction zoon, catalysis bed section and rear connect gradually a whole that forms through the flange. The utility model discloses a horizontal design, the deformation scheduling problem that catalyst support yin gaowen and action of gravity cause has been avoided, the also requirement of adaptable equipment removal, assemble through the flange formula, the be convenient for maintenance and the maintenance of catalyst and heating pipe, adopt air distribution ware and uns -dimethylhydrazine waste gas distributor, not only make air and uns -dimethylhydrazine waste gas homogeneous mixing fast, catalytic reaction is steady, too high and the gas reflux risk of local uns -dimethylhydrazine concentration has also been avoided, explosion -proof mouthful and rupture membrane piece, the possibility that has explosion hazard in the time of can effectively preventing to carry out the catalytic oxidation process in traditional reactor, catalysis bed duan jiashe electric heating pipe, heating power that both can the make full use of heater, shorten the preheating time of catalyst bed, a lot of mixed distribution that again can passing through gases improves catalysis efficiency.