Objective To know the resistance of Blattella germanica in Xi'an,and provide scientific evidence for using insecticides reasonably. Methods The surface contact method was used. Results Blattella germanica held different resistance to beta-cypermethrin,deltamethrin,acephate,propoxur,DDVP and fipronil. The resistance ratios were respectively 3. 935,2. 794,2. 539,3. 128,1. 800 and 1. 485 which were all at low level. Conclusion The insecticide resistance monitorring should be reinforced.