Cry toxins are the most important toxin from Bacillus thuringiensis(Bt),which have been widely used in the management of lepidopteran,coleopteran,dipteran and nematode pests but are not effective against Hempitera.As a result,after the expansion of Bt transgenic crops,target pests will be efficiently controlled,but hemipteran pests will only be managed by the use of traditional chemical pesticides.