To provide theoretical basis for the safety of insecticidal efficiency in Bt cotton, the effects of high temperature and drought stress on insecticidal protein expression and protein differently expression profile was studied. In this study, the Bt cotton cultivar Sikang 3 was used as experimental material, with two treatments(40% field capacity and 38 ℃, HD, and 60% field capacity and 32 ℃,CK). Differences in proteomics of Bt cotton between HD and CK were compared using label-free quantitative proteomics t...