Abstract: Effects of sub lethal dosages of Bacillus thuringiensis ssp galleriae o n SOD and POX activities in Galleriae mellonella larvae were studied. There sults showed that SOD activities both in gut and the whole body and POX activiti es in the whole body of B.t treated larvae were increased compared with untreate d larvae, and a new POX isozyme was found in the whole body of B.t treated larvae, but not in the untreated.