The effect of transgenic Bt corn pollen expressing Cry1Ab toxin (event Bt 11) as a diet on longevity and fecundity of Trichogramma ostriniae Chen et Pang (Hymenoptera: Trichogrammatidae) were assessed in the laboratory.  The results showed that the amount of Cry1Ab toxin detected in Bt corn pollen was 115.13±  7.29 ng/g fresh weight by ELISA method.  Females fed on suspension of pollen of transgenic Bt corn or non-Bt corn in water survivied for a significantly longer time, parasitized more host eggs, and emerged more offspring than those fed on water alone, but no significant difference in sex ratio of offspring was observed.  The longevity of females fed on 10% honey alone was similar to those fed on suspension of pollen of transgenic Bt corn or non-Bt corn in 10% honey without significant differences in fecundity, number of progeny emerged among the treatments.  No significant differences in longevity, number of parasitized eggs, number of progeny emerged and the offspring sex ratio were observed between the females feeding on pollen of Bt corn and non-Bt corn, and this was also shown in experiments with suspension of 10% honey and with water.  It was so concluded that corn pollen in water increased the reproduction and survival of T. ostriniae females compared to water alone; corn pollen of event Bt 11 expressing Cry1Ab toxin had no adverse effect on T. ostriniae.  (Please note:  article text is in Chinese.)